21581705

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{2801}}^1$

素因数の和:2896

約数の個数: 16

約数和(自身を含む): 27437184

約数和(自身を除く): 5855479

約数列:

[1, 5, 23, 67, 115, 335, 1541, 2801, 7705, 14005, 64423, 187667, 322115, 938335, 4316341, 21581705]

約数ペア:

[(1, 21581705), (5, 4316341), (23, 938335), (67, 322115), (115, 187667), (335, 64423), (1541, 14005), (2801, 7705)]