218879521

素因数分解:

$7^2\times {\mathrm{107}}^1\times {\mathrm{109}}^1\times {\mathrm{383}}^1$

素因数の和:613

約数の個数: 24

約数和(自身を含む): 260029440

約数和(自身を除く): 41149919

約数列:

[1, 7, 49, 107, 109, 383, 749, 763, 2681, 5243, 5341, 11663, 18767, 40981, 41747, 81641, 286867, 292229, 571487, 2008069, 2045603, 4466929, 31268503, 218879521]

約数ペア:

[(1, 218879521), (7, 31268503), (49, 4466929), (107, 2045603), (109, 2008069), (383, 571487), (749, 292229), (763, 286867), (2681, 81641), (5243, 41747), (5341, 40981), (11663, 18767)]