20861665

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{8821}}^1$

素因数の和:8880

約数の個数: 16

約数和(自身を含む): 27948096

約数和(自身を除く): 7086431

約数列:

[1, 5, 11, 43, 55, 215, 473, 2365, 8821, 44105, 97031, 379303, 485155, 1896515, 4172333, 20861665]

約数ペア:

[(1, 20861665), (5, 4172333), (11, 1896515), (43, 485155), (55, 379303), (215, 97031), (473, 44105), (2365, 8821)]