20396880

素因数分解:

$2^4\times 3^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1$

素因数の和:119

約数の個数: 320

約数和(自身を含む): 85708800

約数和(自身を除く): 65311920

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, 35, 36, 38, 40, 42, 45, 48, 54, 56, 57, 60, 63, 70, 71, 72, 76, 80, 84, 90, 95, 105, 108, 112, 114, 120, 126, 133, 135, 140, 142, 144, 152, 168, 171, 180, 189, 190, 210, 213, 216, 228, 240, 252, 266, 270, 280, 284, 285, 304, 315, 336, 342, 355, 360, 378, 380, 399, 420, 426, 432, 456, 497, 504, 513, 532, 540, 560, 568, 570, 630, 639, 665, 684, 710, 720, 756, 760, 798, 840, 852, 855, 912, 945, 994, 1008, 1026, 1064, 1065, 1080, 1136, 1140, 1197, 1260, 1278, 1330, 1349, 1368, 1420, 1491, 1512, 1520, 1596, 1680, 1704, 1710, 1890, 1917, 1988, 1995, 2052, 2128, 2130, 2160, 2280, 2394, 2485, 2520, 2556, 2565, 2660, 2698, 2736, 2840, 2982, 3024, 3192, 3195, 3408, 3420, 3591, 3780, 3834, 3976, 3990, 4047, 4104, 4260, 4473, 4560, 4788, 4970, 5040, 5112, 5130, 5320, 5396, 5680, 5964, 5985, 6384, 6390, 6745, 6840, 7182, 7455, 7560, 7668, 7952, 7980, 8094, 8208, 8520, 8946, 9443, 9576, 9585, 9940, 10224, 10260, 10640, 10792, 11928, 11970, 12141, 12780, 13419, 13490, 13680, 14364, 14910, 15120, 15336, 15960, 16188, 17040, 17892, 17955, 18886, 19152, 19170, 19880, 20235, 20520, 21584, 22365, 23856, 23940, 24282, 25560, 26838, 26980, 28329, 28728, 29820, 30672, 31920, 32376, 35784, 35910, 36423, 37772, 38340, 39760, 40470, 41040, 44730, 47215, 47880, 48564, 51120, 53676, 53960, 56658, 57456, 59640, 60705, 64752, 67095, 71568, 71820, 72846, 75544, 76680, 80940, 84987, 89460, 94430, 95760, 97128, 107352, 107920, 113316, 119280, 121410, 134190, 141645, 143640, 145692, 151088, 153360, 161880, 169974, 178920, 182115, 188860, 194256, 214704, 226632, 242820, 254961, 268380, 283290, 287280, 291384, 323760, 339948, 357840, 364230, 377720, 424935, 453264, 485640, 509922, 536760, 566580, 582768, 679896, 728460, 755440, 849870, 971280, 1019844, 1073520, 1133160, 1274805, 1359792, 1456920, 1699740, 2039688, 2266320, 2549610, 2913840, 3399480, 4079376, 5099220, 6798960, 10198440, 20396880]

約数ペア:

[(1, 20396880), (2, 10198440), (3, 6798960), (4, 5099220), (5, 4079376), (6, 3399480), (7, 2913840), (8, 2549610), (9, 2266320), (10, 2039688), (12, 1699740), (14, 1456920), (15, 1359792), (16, 1274805), (18, 1133160), (19, 1073520), (20, 1019844), (21, 971280), (24, 849870), (27, 755440), (28, 728460), (30, 679896), (35, 582768), (36, 566580), (38, 536760), (40, 509922), (42, 485640), (45, 453264), (48, 424935), (54, 377720), (56, 364230), (57, 357840), (60, 339948), (63, 323760), (70, 291384), (71, 287280), (72, 283290), (76, 268380), (80, 254961), (84, 242820), (90, 226632), (95, 214704), (105, 194256), (108, 188860), (112, 182115), (114, 178920), (120, 169974), (126, 161880), (133, 153360), (135, 151088), (140, 145692), (142, 143640), (144, 141645), (152, 134190), (168, 121410), (171, 119280), (180, 113316), (189, 107920), (190, 107352), (210, 97128), (213, 95760), (216, 94430), (228, 89460), (240, 84987), (252, 80940), (266, 76680), (270, 75544), (280, 72846), (284, 71820), (285, 71568), (304, 67095), (315, 64752), (336, 60705), (342, 59640), (355, 57456), (360, 56658), (378, 53960), (380, 53676), (399, 51120), (420, 48564), (426, 47880), (432, 47215), (456, 44730), (497, 41040), (504, 40470), (513, 39760), (532, 38340), (540, 37772), (560, 36423), (568, 35910), (570, 35784), (630, 32376), (639, 31920), (665, 30672), (684, 29820), (710, 28728), (720, 28329), (756, 26980), (760, 26838), (798, 25560), (840, 24282), (852, 23940), (855, 23856), (912, 22365), (945, 21584), (994, 20520), (1008, 20235), (1026, 19880), (1064, 19170), (1065, 19152), (1080, 18886), (1136, 17955), (1140, 17892), (1197, 17040), (1260, 16188), (1278, 15960), (1330, 15336), (1349, 15120), (1368, 14910), (1420, 14364), (1491, 13680), (1512, 13490), (1520, 13419), (1596, 12780), (1680, 12141), (1704, 11970), (1710, 11928), (1890, 10792), (1917, 10640), (1988, 10260), (1995, 10224), (2052, 9940), (2128, 9585), (2130, 9576), (2160, 9443), (2280, 8946), (2394, 8520), (2485, 8208), (2520, 8094), (2556, 7980), (2565, 7952), (2660, 7668), (2698, 7560), (2736, 7455), (2840, 7182), (2982, 6840), (3024, 6745), (3192, 6390), (3195, 6384), (3408, 5985), (3420, 5964), (3591, 5680), (3780, 5396), (3834, 5320), (3976, 5130), (3990, 5112), (4047, 5040), (4104, 4970), (4260, 4788), (4473, 4560)]