21152758

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{8821}}^1$

素因数の和:8943

約数の個数: 16

約数和(自身を含む): 34935120

約数和(自身を除く): 13782362

約数列:

[1, 2, 11, 22, 109, 218, 1199, 2398, 8821, 17642, 97031, 194062, 961489, 1922978, 10576379, 21152758]

約数ペア:

[(1, 21152758), (2, 10576379), (11, 1922978), (22, 961489), (109, 194062), (218, 97031), (1199, 17642), (2398, 8821)]