399440080

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{16699}}^1$

素因数の和:16748

約数の個数: 80

約数和(自身を含む): 1043683200

約数和(自身を除く): 644243120

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 26, 40, 46, 52, 65, 80, 92, 104, 115, 130, 184, 208, 230, 260, 299, 368, 460, 520, 598, 920, 1040, 1196, 1495, 1840, 2392, 2990, 4784, 5980, 11960, 16699, 23920, 33398, 66796, 83495, 133592, 166990, 217087, 267184, 333980, 384077, 434174, 667960, 768154, 868348, 1085435, 1335920, 1536308, 1736696, 1920385, 2170870, 3072616, 3473392, 3840770, 4341740, 4993001, 6145232, 7681540, 8683480, 9986002, 15363080, 17366960, 19972004, 24965005, 30726160, 39944008, 49930010, 79888016, 99860020, 199720040, 399440080]

約数ペア:

[(1, 399440080), (2, 199720040), (4, 99860020), (5, 79888016), (8, 49930010), (10, 39944008), (13, 30726160), (16, 24965005), (20, 19972004), (23, 17366960), (26, 15363080), (40, 9986002), (46, 8683480), (52, 7681540), (65, 6145232), (80, 4993001), (92, 4341740), (104, 3840770), (115, 3473392), (130, 3072616), (184, 2170870), (208, 1920385), (230, 1736696), (260, 1536308), (299, 1335920), (368, 1085435), (460, 868348), (520, 768154), (598, 667960), (920, 434174), (1040, 384077), (1196, 333980), (1495, 267184), (1840, 217087), (2392, 166990), (2990, 133592), (4784, 83495), (5980, 66796), (11960, 33398), (16699, 23920)]