21032705

素因数分解:

$5^1\times {\mathrm{131}}^1\times {\mathrm{163}}^1\times {\mathrm{197}}^1$

素因数の和:496

約数の個数: 16

約数和(自身を含む): 25717824

約数和(自身を除く): 4685119

約数列:

[1, 5, 131, 163, 197, 655, 815, 985, 21353, 25807, 32111, 106765, 129035, 160555, 4206541, 21032705]

約数ペア:

[(1, 21032705), (5, 4206541), (131, 160555), (163, 129035), (197, 106765), (655, 32111), (815, 25807), (985, 21353)]