21318335

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{233}}^1\times {\mathrm{631}}^1$

素因数の和:898

約数の個数: 16

約数和(自身を含む): 26619840

約数和(自身を除く): 5301505

約数列:

[1, 5, 29, 145, 233, 631, 1165, 3155, 6757, 18299, 33785, 91495, 147023, 735115, 4263667, 21318335]

約数ペア:

[(1, 21318335), (5, 4263667), (29, 735115), (145, 147023), (233, 91495), (631, 33785), (1165, 18299), (3155, 6757)]