21349072

素因数分解:

$2^4\times {\mathrm{397}}^1\times {\mathrm{3361}}^1$

素因数の和:3766

約数の個数: 20

約数和(自身を含む): 41480356

約数和(自身を除く): 20131284

約数列:

[1, 2, 4, 8, 16, 397, 794, 1588, 3176, 3361, 6352, 6722, 13444, 26888, 53776, 1334317, 2668634, 5337268, 10674536, 21349072]

約数ペア:

[(1, 21349072), (2, 10674536), (4, 5337268), (8, 2668634), (16, 1334317), (397, 53776), (794, 26888), (1588, 13444), (3176, 6722), (3361, 6352)]