21881395

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{149}}^1\times {\mathrm{1277}}^1$

素因数の和:1454

約数の個数: 16

約数和(自身を含む): 27604800

約数和(自身を除く): 5723405

約数列:

[1, 5, 23, 115, 149, 745, 1277, 3427, 6385, 17135, 29371, 146855, 190273, 951365, 4376279, 21881395]

約数ペア:

[(1, 21881395), (5, 4376279), (23, 951365), (115, 190273), (149, 146855), (745, 29371), (1277, 17135), (3427, 6385)]