63720905

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{401}}^1\times {\mathrm{521}}^1$

素因数の和:988

約数の個数: 16

約数和(自身を含む): 78061968

約数和(自身を除く): 14341063

約数列:

[1, 5, 61, 305, 401, 521, 2005, 2605, 24461, 31781, 122305, 158905, 208921, 1044605, 12744181, 63720905]

約数ペア:

[(1, 63720905), (5, 12744181), (61, 1044605), (305, 208921), (401, 158905), (521, 122305), (2005, 31781), (2605, 24461)]