21981145

素因数分解:

$5^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1\times {\mathrm{907}}^1$

素因数の和:1080

約数の個数: 16

約数和(自身を含む): 27327168

約数和(自身を除く): 5346023

約数列:

[1, 5, 37, 131, 185, 655, 907, 4535, 4847, 24235, 33559, 118817, 167795, 594085, 4396229, 21981145]

約数ペア:

[(1, 21981145), (5, 4396229), (37, 594085), (131, 167795), (185, 118817), (655, 33559), (907, 24235), (4535, 4847)]