20259640

素因数分解:

$2^3\times 5^1\times {\mathrm{506491}}^1$

素因数の和:506502

約数の個数: 16

約数和(自身を含む): 45584280

約数和(自身を除く): 25324640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 506491, 1012982, 2025964, 2532455, 4051928, 5064910, 10129820, 20259640]

約数ペア:

[(1, 20259640), (2, 10129820), (4, 5064910), (5, 4051928), (8, 2532455), (10, 2025964), (20, 1012982), (40, 506491)]