21058920

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1$

素因数の和:105

約数の個数: 256

約数和(自身を含む): 78796800

約数和(自身を除く): 57737880

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 17, 18, 20, 24, 27, 30, 31, 34, 36, 37, 40, 45, 51, 54, 60, 62, 68, 72, 74, 85, 90, 93, 102, 108, 111, 120, 124, 135, 136, 148, 153, 155, 170, 180, 185, 186, 204, 216, 222, 248, 255, 270, 279, 296, 306, 310, 333, 340, 360, 370, 372, 408, 444, 459, 465, 510, 527, 540, 555, 558, 612, 620, 629, 666, 680, 740, 744, 765, 837, 888, 918, 930, 999, 1020, 1054, 1080, 1110, 1116, 1147, 1224, 1240, 1258, 1332, 1395, 1480, 1530, 1581, 1665, 1674, 1836, 1860, 1887, 1998, 2040, 2108, 2220, 2232, 2294, 2295, 2516, 2635, 2664, 2790, 3060, 3145, 3162, 3330, 3348, 3441, 3672, 3720, 3774, 3996, 4185, 4216, 4440, 4588, 4590, 4743, 4995, 5032, 5270, 5580, 5661, 5735, 6120, 6290, 6324, 6660, 6696, 6882, 7548, 7905, 7992, 8370, 9176, 9180, 9435, 9486, 9990, 10323, 10540, 11160, 11322, 11470, 12580, 12648, 13320, 13764, 14229, 15096, 15810, 16740, 16983, 17205, 18360, 18870, 18972, 19499, 19980, 20646, 21080, 22644, 22940, 23715, 25160, 27528, 28305, 28458, 30969, 31620, 33480, 33966, 34410, 37740, 37944, 38998, 39960, 41292, 45288, 45880, 47430, 51615, 56610, 56916, 58497, 61938, 63240, 67932, 68820, 71145, 75480, 77996, 82584, 84915, 94860, 97495, 103230, 113220, 113832, 116994, 123876, 135864, 137640, 142290, 154845, 155992, 169830, 175491, 189720, 194990, 206460, 226440, 233988, 247752, 284580, 292485, 309690, 339660, 350982, 389980, 412920, 467976, 526473, 569160, 584970, 619380, 679320, 701964, 779960, 877455, 1052946, 1169940, 1238760, 1403928, 1754910, 2105892, 2339880, 2632365, 3509820, 4211784, 5264730, 7019640, 10529460, 21058920]

約数ペア:

[(1, 21058920), (2, 10529460), (3, 7019640), (4, 5264730), (5, 4211784), (6, 3509820), (8, 2632365), (9, 2339880), (10, 2105892), (12, 1754910), (15, 1403928), (17, 1238760), (18, 1169940), (20, 1052946), (24, 877455), (27, 779960), (30, 701964), (31, 679320), (34, 619380), (36, 584970), (37, 569160), (40, 526473), (45, 467976), (51, 412920), (54, 389980), (60, 350982), (62, 339660), (68, 309690), (72, 292485), (74, 284580), (85, 247752), (90, 233988), (93, 226440), (102, 206460), (108, 194990), (111, 189720), (120, 175491), (124, 169830), (135, 155992), (136, 154845), (148, 142290), (153, 137640), (155, 135864), (170, 123876), (180, 116994), (185, 113832), (186, 113220), (204, 103230), (216, 97495), (222, 94860), (248, 84915), (255, 82584), (270, 77996), (279, 75480), (296, 71145), (306, 68820), (310, 67932), (333, 63240), (340, 61938), (360, 58497), (370, 56916), (372, 56610), (408, 51615), (444, 47430), (459, 45880), (465, 45288), (510, 41292), (527, 39960), (540, 38998), (555, 37944), (558, 37740), (612, 34410), (620, 33966), (629, 33480), (666, 31620), (680, 30969), (740, 28458), (744, 28305), (765, 27528), (837, 25160), (888, 23715), (918, 22940), (930, 22644), (999, 21080), (1020, 20646), (1054, 19980), (1080, 19499), (1110, 18972), (1116, 18870), (1147, 18360), (1224, 17205), (1240, 16983), (1258, 16740), (1332, 15810), (1395, 15096), (1480, 14229), (1530, 13764), (1581, 13320), (1665, 12648), (1674, 12580), (1836, 11470), (1860, 11322), (1887, 11160), (1998, 10540), (2040, 10323), (2108, 9990), (2220, 9486), (2232, 9435), (2294, 9180), (2295, 9176), (2516, 8370), (2635, 7992), (2664, 7905), (2790, 7548), (3060, 6882), (3145, 6696), (3162, 6660), (3330, 6324), (3348, 6290), (3441, 6120), (3672, 5735), (3720, 5661), (3774, 5580), (3996, 5270), (4185, 5032), (4216, 4995), (4440, 4743), (4588, 4590)]