21721145

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{2539}}^1$

素因数の和:2632

約数の個数: 16

約数和(自身を含む): 27432000

約数和(自身を除く): 5710855

約数列:

[1, 5, 29, 59, 145, 295, 1711, 2539, 8555, 12695, 73631, 149801, 368155, 749005, 4344229, 21721145]

約数ペア:

[(1, 21721145), (5, 4344229), (29, 749005), (59, 368155), (145, 149801), (295, 73631), (1711, 12695), (2539, 8555)]