21015169

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{643}}^1$

素因数の和:709

約数の個数: 24

約数和(自身を含む): 26429760

約数和(自身を除く): 5414591

約数列:

[1, 7, 23, 29, 49, 161, 203, 643, 667, 1127, 1421, 4501, 4669, 14789, 18647, 31507, 32683, 103523, 130529, 428881, 724661, 913703, 3002167, 21015169]

約数ペア:

[(1, 21015169), (7, 3002167), (23, 913703), (29, 724661), (49, 428881), (161, 130529), (203, 103523), (643, 32683), (667, 31507), (1127, 18647), (1421, 14789), (4501, 4669)]