655312225

素因数分解:

$5^2\times {\mathrm{41}}^1\times {\mathrm{639329}}^1$

素因数の和:639380

約数の個数: 12

約数和(自身を含む): 832407660

約数和(自身を除く): 177095435

約数列:

[1, 5, 25, 41, 205, 1025, 639329, 3196645, 15983225, 26212489, 131062445, 655312225]

約数ペア:

[(1, 655312225), (5, 131062445), (25, 26212489), (41, 15983225), (205, 3196645), (1025, 639329)]