21426587

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{977}}^1$

素因数の和:1238

約数の個数: 16

約数和(自身を含む): 26507712

約数和(自身を除く): 5081125

約数列:

[1, 7, 13, 91, 241, 977, 1687, 3133, 6839, 12701, 21931, 88907, 235457, 1648199, 3060941, 21426587]

約数ペア:

[(1, 21426587), (7, 3060941), (13, 1648199), (91, 235457), (241, 88907), (977, 21931), (1687, 12701), (3133, 6839)]