21604739

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{3371}}^1$

素因数の和:3430

約数の個数: 16

約数和(自身を含む): 25492320

約数和(自身を除く): 3887581

約数列:

[1, 13, 17, 29, 221, 377, 493, 3371, 6409, 43823, 57307, 97759, 744991, 1270867, 1661903, 21604739]

約数ペア:

[(1, 21604739), (13, 1661903), (17, 1270867), (29, 744991), (221, 97759), (377, 57307), (493, 43823), (3371, 6409)]