21050007

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{103}}^1\times {\mathrm{563}}^1$

素因数の和:691

約数の個数: 24

約数和(自身を含む): 31204992

約数和(自身を除く): 10154985

約数列:

[1, 3, 11, 33, 103, 121, 309, 363, 563, 1133, 1689, 3399, 6193, 12463, 18579, 37389, 57989, 68123, 173967, 204369, 637879, 1913637, 7016669, 21050007]

約数ペア:

[(1, 21050007), (3, 7016669), (11, 1913637), (33, 637879), (103, 204369), (121, 173967), (309, 68123), (363, 57989), (563, 37389), (1133, 18579), (1689, 12463), (3399, 6193)]