21958578

素因数分解:

$2^1\times 3^2\times {\mathrm{991}}^1\times {\mathrm{1231}}^1$

素因数の和:2230

約数の個数: 24

約数和(自身を含む): 47663616

約数和(自身を除く): 25705038

約数列:

[1, 2, 3, 6, 9, 18, 991, 1231, 1982, 2462, 2973, 3693, 5946, 7386, 8919, 11079, 17838, 22158, 1219921, 2439842, 3659763, 7319526, 10979289, 21958578]

約数ペア:

[(1, 21958578), (2, 10979289), (3, 7319526), (6, 3659763), (9, 2439842), (18, 1219921), (991, 22158), (1231, 17838), (1982, 11079), (2462, 8919), (2973, 7386), (3693, 5946)]