21791416

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{160231}}^1$

素因数の和:160254

約数の個数: 16

約数和(自身を含む): 43262640

約数和(自身を除く): 21471224

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 160231, 320462, 640924, 1281848, 2723927, 5447854, 10895708, 21791416]

約数ペア:

[(1, 21791416), (2, 10895708), (4, 5447854), (8, 2723927), (17, 1281848), (34, 640924), (68, 320462), (136, 160231)]