21702550

素因数分解:

$2^1\times 5^2\times {\mathrm{421}}^1\times {\mathrm{1031}}^1$

素因数の和:1464

約数の個数: 24

約数和(自身を含む): 40501872

約数和(自身を除く): 18799322

約数列:

[1, 2, 5, 10, 25, 50, 421, 842, 1031, 2062, 2105, 4210, 5155, 10310, 10525, 21050, 25775, 51550, 434051, 868102, 2170255, 4340510, 10851275, 21702550]

約数ペア:

[(1, 21702550), (2, 10851275), (5, 4340510), (10, 2170255), (25, 868102), (50, 434051), (421, 51550), (842, 25775), (1031, 21050), (2062, 10525), (2105, 10310), (4210, 5155)]