18647960

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{4357}}^1$

素因数の和:4475

約数の個数: 32

約数和(自身を含む): 42359760

約数和(自身を除く): 23711800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 214, 428, 535, 856, 1070, 2140, 4280, 4357, 8714, 17428, 21785, 34856, 43570, 87140, 174280, 466199, 932398, 1864796, 2330995, 3729592, 4661990, 9323980, 18647960]

約数ペア:

[(1, 18647960), (2, 9323980), (4, 4661990), (5, 3729592), (8, 2330995), (10, 1864796), (20, 932398), (40, 466199), (107, 174280), (214, 87140), (428, 43570), (535, 34856), (856, 21785), (1070, 17428), (2140, 8714), (4280, 4357)]