87219640

素因数分解:

$2^3\times 5^1\times {\mathrm{2180491}}^1$

素因数の和:2180502

約数の個数: 16

約数和(自身を含む): 196244280

約数和(自身を除く): 109024640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2180491, 4360982, 8721964, 10902455, 17443928, 21804910, 43609820, 87219640]

約数ペア:

[(1, 87219640), (2, 43609820), (4, 21804910), (5, 17443928), (8, 10902455), (10, 8721964), (20, 4360982), (40, 2180491)]