21181886

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{22391}}^1$

素因数の和:22447

約数の個数: 16

約数和(自身を含む): 35468928

約数和(自身を除く): 14287042

約数列:

[1, 2, 11, 22, 43, 86, 473, 946, 22391, 44782, 246301, 492602, 962813, 1925626, 10590943, 21181886]

約数ペア:

[(1, 21181886), (2, 10590943), (11, 1925626), (22, 962813), (43, 492602), (86, 246301), (473, 44782), (946, 22391)]