18712040

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{3571}}^1$

素因数の和:3713

約数の個数: 32

約数和(自身を含む): 42435360

約数和(自身を除く): 23723320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 524, 655, 1048, 1310, 2620, 3571, 5240, 7142, 14284, 17855, 28568, 35710, 71420, 142840, 467801, 935602, 1871204, 2339005, 3742408, 4678010, 9356020, 18712040]

約数ペア:

[(1, 18712040), (2, 9356020), (4, 4678010), (5, 3742408), (8, 2339005), (10, 1871204), (20, 935602), (40, 467801), (131, 142840), (262, 71420), (524, 35710), (655, 28568), (1048, 17855), (1310, 14284), (2620, 7142), (3571, 5240)]