21551665

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{8179}}^1$

素因数の和:8232

約数の個数: 16

約数和(自身を含む): 28270080

約数和(自身を除く): 6718415

約数列:

[1, 5, 17, 31, 85, 155, 527, 2635, 8179, 40895, 139043, 253549, 695215, 1267745, 4310333, 21551665]

約数ペア:

[(1, 21551665), (5, 4310333), (17, 1267745), (31, 695215), (85, 253549), (155, 139043), (527, 40895), (2635, 8179)]