31423960

素因数分解:

$2^3\times 5^1\times {\mathrm{349}}^1\times {\mathrm{2251}}^1$

素因数の和:2611

約数の個数: 32

約数和(自身を含む): 70938000

約数和(自身を除く): 39514040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 349, 698, 1396, 1745, 2251, 2792, 3490, 4502, 6980, 9004, 11255, 13960, 18008, 22510, 45020, 90040, 785599, 1571198, 3142396, 3927995, 6284792, 7855990, 15711980, 31423960]

約数ペア:

[(1, 31423960), (2, 15711980), (4, 7855990), (5, 6284792), (8, 3927995), (10, 3142396), (20, 1571198), (40, 785599), (349, 90040), (698, 45020), (1396, 22510), (1745, 18008), (2251, 13960), (2792, 11255), (3490, 9004), (4502, 6980)]