64789820

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{75337}}^1$

素因数の和:75389

約数の個数: 24

約数和(自身を含む): 139224624

約数和(自身を除く): 74434804

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 75337, 150674, 301348, 376685, 753370, 1506740, 3239491, 6478982, 12957964, 16197455, 32394910, 64789820]

約数ペア:

[(1, 64789820), (2, 32394910), (4, 16197455), (5, 12957964), (10, 6478982), (20, 3239491), (43, 1506740), (86, 753370), (172, 376685), (215, 301348), (430, 150674), (860, 75337)]