21856874

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{12547}}^1$

素因数の和:12629

約数の個数: 16

約数和(自身を含む): 35837088

約数和(自身を除く): 13980214

約数列:

[1, 2, 13, 26, 67, 134, 871, 1742, 12547, 25094, 163111, 326222, 840649, 1681298, 10928437, 21856874]

約数ペア:

[(1, 21856874), (2, 10928437), (13, 1681298), (26, 840649), (67, 326222), (134, 163111), (871, 25094), (1742, 12547)]