21105702919

素因数分解:

$7^2\times {\mathrm{691}}^1\times {\mathrm{623341}}^1$

素因数の和:624046

約数の個数: 12

約数和(自身を含む): 24587101848

約数和(自身を除く): 3481398929

約数列:

[1, 7, 49, 691, 4837, 33859, 623341, 4363387, 30543709, 430728631, 3015100417, 21105702919]

約数ペア:

[(1, 21105702919), (7, 3015100417), (49, 430728631), (691, 30543709), (4837, 4363387), (33859, 623341)]