400286640

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:252

約数の個数: 240

約数和(自身を含む): 1372412160

約数和(自身を除く): 972125520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 71, 78, 80, 104, 120, 130, 139, 142, 156, 169, 195, 208, 213, 240, 260, 278, 284, 312, 338, 355, 390, 417, 426, 507, 520, 556, 568, 624, 676, 695, 710, 780, 834, 845, 852, 923, 1014, 1040, 1065, 1112, 1136, 1352, 1390, 1420, 1560, 1668, 1690, 1704, 1807, 1846, 2028, 2085, 2130, 2224, 2535, 2704, 2769, 2780, 2840, 3120, 3336, 3380, 3408, 3614, 3692, 4056, 4170, 4260, 4615, 5070, 5421, 5538, 5560, 5680, 6672, 6760, 7228, 7384, 8112, 8340, 8520, 9035, 9230, 9869, 10140, 10842, 11076, 11120, 11999, 13520, 13845, 14456, 14768, 16680, 17040, 18070, 18460, 19738, 20280, 21684, 22152, 23491, 23998, 27105, 27690, 28912, 29607, 33360, 35997, 36140, 36920, 39476, 40560, 43368, 44304, 46982, 47996, 49345, 54210, 55380, 59214, 59995, 70473, 71994, 72280, 73840, 78952, 86736, 93964, 95992, 98690, 108420, 110760, 117455, 118428, 119990, 128297, 140946, 143988, 144560, 148035, 157904, 179985, 187928, 191984, 197380, 216840, 221520, 234910, 236856, 239980, 256594, 281892, 287976, 296070, 352365, 359970, 375856, 384891, 394760, 433680, 469820, 473712, 479960, 513188, 563784, 575952, 592140, 641485, 704730, 719940, 769782, 789520, 939640, 959920, 1026376, 1127568, 1184280, 1282970, 1409460, 1439880, 1539564, 1667861, 1879280, 1924455, 2052752, 2368560, 2565940, 2818920, 2879760, 3079128, 3335722, 3848910, 5003583, 5131880, 5637840, 6158256, 6671444, 7697820, 8339305, 10007166, 10263760, 13342888, 15395640, 16678610, 20014332, 25017915, 26685776, 30791280, 33357220, 40028664, 50035830, 66714440, 80057328, 100071660, 133428880, 200143320, 400286640]

約数ペア:

[(1, 400286640), (2, 200143320), (3, 133428880), (4, 100071660), (5, 80057328), (6, 66714440), (8, 50035830), (10, 40028664), (12, 33357220), (13, 30791280), (15, 26685776), (16, 25017915), (20, 20014332), (24, 16678610), (26, 15395640), (30, 13342888), (39, 10263760), (40, 10007166), (48, 8339305), (52, 7697820), (60, 6671444), (65, 6158256), (71, 5637840), (78, 5131880), (80, 5003583), (104, 3848910), (120, 3335722), (130, 3079128), (139, 2879760), (142, 2818920), (156, 2565940), (169, 2368560), (195, 2052752), (208, 1924455), (213, 1879280), (240, 1667861), (260, 1539564), (278, 1439880), (284, 1409460), (312, 1282970), (338, 1184280), (355, 1127568), (390, 1026376), (417, 959920), (426, 939640), (507, 789520), (520, 769782), (556, 719940), (568, 704730), (624, 641485), (676, 592140), (695, 575952), (710, 563784), (780, 513188), (834, 479960), (845, 473712), (852, 469820), (923, 433680), (1014, 394760), (1040, 384891), (1065, 375856), (1112, 359970), (1136, 352365), (1352, 296070), (1390, 287976), (1420, 281892), (1560, 256594), (1668, 239980), (1690, 236856), (1704, 234910), (1807, 221520), (1846, 216840), (2028, 197380), (2085, 191984), (2130, 187928), (2224, 179985), (2535, 157904), (2704, 148035), (2769, 144560), (2780, 143988), (2840, 140946), (3120, 128297), (3336, 119990), (3380, 118428), (3408, 117455), (3614, 110760), (3692, 108420), (4056, 98690), (4170, 95992), (4260, 93964), (4615, 86736), (5070, 78952), (5421, 73840), (5538, 72280), (5560, 71994), (5680, 70473), (6672, 59995), (6760, 59214), (7228, 55380), (7384, 54210), (8112, 49345), (8340, 47996), (8520, 46982), (9035, 44304), (9230, 43368), (9869, 40560), (10140, 39476), (10842, 36920), (11076, 36140), (11120, 35997), (11999, 33360), (13520, 29607), (13845, 28912), (14456, 27690), (14768, 27105), (16680, 23998), (17040, 23491), (18070, 22152), (18460, 21684), (19738, 20280)]