21080715

素因数分解:

$3^1\times 5^1\times {\mathrm{113}}^1\times {\mathrm{12437}}^1$

素因数の和:12558

約数の個数: 16

約数和(自身を含む): 34030368

約数和(自身を除く): 12949653

約数列:

[1, 3, 5, 15, 113, 339, 565, 1695, 12437, 37311, 62185, 186555, 1405381, 4216143, 7026905, 21080715]

約数ペア:

[(1, 21080715), (3, 7026905), (5, 4216143), (15, 1405381), (113, 186555), (339, 62185), (565, 37311), (1695, 12437)]