21258720

素因数分解:

$2^5\times 3^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1$

素因数の和:87

約数の個数: 384

約数和(自身を含む): 91929600

約数和(自身を除く): 70670880

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 19, 20, 21, 24, 27, 28, 30, 32, 35, 36, 37, 38, 40, 42, 45, 48, 54, 56, 57, 60, 63, 70, 72, 74, 76, 80, 84, 90, 95, 96, 105, 108, 111, 112, 114, 120, 126, 133, 135, 140, 144, 148, 152, 160, 168, 171, 180, 185, 189, 190, 210, 216, 222, 224, 228, 240, 252, 259, 266, 270, 280, 285, 288, 296, 304, 315, 333, 336, 342, 360, 370, 378, 380, 399, 420, 432, 444, 456, 480, 504, 513, 518, 532, 540, 555, 560, 570, 592, 608, 630, 665, 666, 672, 684, 703, 720, 740, 756, 760, 777, 798, 840, 855, 864, 888, 912, 945, 999, 1008, 1026, 1036, 1064, 1080, 1110, 1120, 1140, 1184, 1197, 1260, 1295, 1330, 1332, 1368, 1406, 1440, 1480, 1512, 1520, 1554, 1596, 1665, 1680, 1710, 1776, 1824, 1890, 1995, 1998, 2016, 2052, 2072, 2109, 2128, 2160, 2220, 2280, 2331, 2394, 2520, 2565, 2590, 2660, 2664, 2736, 2812, 2960, 3024, 3040, 3108, 3192, 3330, 3360, 3420, 3515, 3552, 3591, 3780, 3885, 3990, 3996, 4104, 4144, 4218, 4256, 4320, 4440, 4560, 4662, 4788, 4921, 4995, 5040, 5130, 5180, 5320, 5328, 5472, 5624, 5920, 5985, 6048, 6216, 6327, 6384, 6660, 6840, 6993, 7030, 7182, 7560, 7770, 7980, 7992, 8208, 8288, 8436, 8880, 9120, 9324, 9576, 9842, 9990, 10080, 10260, 10360, 10545, 10640, 10656, 11248, 11655, 11970, 12432, 12654, 12768, 13320, 13680, 13986, 14060, 14364, 14763, 15120, 15540, 15960, 15984, 16416, 16872, 17760, 17955, 18648, 18981, 19152, 19684, 19980, 20520, 20720, 21090, 21280, 22496, 23310, 23940, 24605, 24864, 25308, 26640, 27360, 27972, 28120, 28728, 29526, 30240, 31080, 31635, 31920, 31968, 33744, 34965, 35910, 37296, 37962, 38304, 39368, 39960, 41040, 41440, 42180, 44289, 46620, 47880, 49210, 50616, 53280, 55944, 56240, 57456, 59052, 62160, 63270, 63840, 67488, 69930, 71820, 73815, 74592, 75924, 78736, 79920, 82080, 84360, 88578, 93240, 94905, 95760, 98420, 101232, 111888, 112480, 114912, 118104, 124320, 126540, 132867, 139860, 143640, 147630, 151848, 157472, 159840, 168720, 177156, 186480, 189810, 191520, 196840, 202464, 221445, 223776, 236208, 253080, 265734, 279720, 287280, 295260, 303696, 337440, 354312, 372960, 379620, 393680, 442890, 472416, 506160, 531468, 559440, 574560, 590520, 607392, 664335, 708624, 759240, 787360, 885780, 1012320, 1062936, 1118880, 1181040, 1328670, 1417248, 1518480, 1771560, 2125872, 2362080, 2657340, 3036960, 3543120, 4251744, 5314680, 7086240, 10629360, 21258720]

約数ペア:

[(1, 21258720), (2, 10629360), (3, 7086240), (4, 5314680), (5, 4251744), (6, 3543120), (7, 3036960), (8, 2657340), (9, 2362080), (10, 2125872), (12, 1771560), (14, 1518480), (15, 1417248), (16, 1328670), (18, 1181040), (19, 1118880), (20, 1062936), (21, 1012320), (24, 885780), (27, 787360), (28, 759240), (30, 708624), (32, 664335), (35, 607392), (36, 590520), (37, 574560), (38, 559440), (40, 531468), (42, 506160), (45, 472416), (48, 442890), (54, 393680), (56, 379620), (57, 372960), (60, 354312), (63, 337440), (70, 303696), (72, 295260), (74, 287280), (76, 279720), (80, 265734), (84, 253080), (90, 236208), (95, 223776), (96, 221445), (105, 202464), (108, 196840), (111, 191520), (112, 189810), (114, 186480), (120, 177156), (126, 168720), (133, 159840), (135, 157472), (140, 151848), (144, 147630), (148, 143640), (152, 139860), (160, 132867), (168, 126540), (171, 124320), (180, 118104), (185, 114912), (189, 112480), (190, 111888), (210, 101232), (216, 98420), (222, 95760), (224, 94905), (228, 93240), (240, 88578), (252, 84360), (259, 82080), (266, 79920), (270, 78736), (280, 75924), (285, 74592), (288, 73815), (296, 71820), (304, 69930), (315, 67488), (333, 63840), (336, 63270), (342, 62160), (360, 59052), (370, 57456), (378, 56240), (380, 55944), (399, 53280), (420, 50616), (432, 49210), (444, 47880), (456, 46620), (480, 44289), (504, 42180), (513, 41440), (518, 41040), (532, 39960), (540, 39368), (555, 38304), (560, 37962), (570, 37296), (592, 35910), (608, 34965), (630, 33744), (665, 31968), (666, 31920), (672, 31635), (684, 31080), (703, 30240), (720, 29526), (740, 28728), (756, 28120), (760, 27972), (777, 27360), (798, 26640), (840, 25308), (855, 24864), (864, 24605), (888, 23940), (912, 23310), (945, 22496), (999, 21280), (1008, 21090), (1026, 20720), (1036, 20520), (1064, 19980), (1080, 19684), (1110, 19152), (1120, 18981), (1140, 18648), (1184, 17955), (1197, 17760), (1260, 16872), (1295, 16416), (1330, 15984), (1332, 15960), (1368, 15540), (1406, 15120), (1440, 14763), (1480, 14364), (1512, 14060), (1520, 13986), (1554, 13680), (1596, 13320), (1665, 12768), (1680, 12654), (1710, 12432), (1776, 11970), (1824, 11655), (1890, 11248), (1995, 10656), (1998, 10640), (2016, 10545), (2052, 10360), (2072, 10260), (2109, 10080), (2128, 9990), (2160, 9842), (2220, 9576), (2280, 9324), (2331, 9120), (2394, 8880), (2520, 8436), (2565, 8288), (2590, 8208), (2660, 7992), (2664, 7980), (2736, 7770), (2812, 7560), (2960, 7182), (3024, 7030), (3040, 6993), (3108, 6840), (3192, 6660), (3330, 6384), (3360, 6327), (3420, 6216), (3515, 6048), (3552, 5985), (3591, 5920), (3780, 5624), (3885, 5472), (3990, 5328), (3996, 5320), (4104, 5180), (4144, 5130), (4218, 5040), (4256, 4995), (4320, 4921), (4440, 4788), (4560, 4662)]