21157460

素因数分解:

$2^2\times 5^1\times {\mathrm{937}}^1\times {\mathrm{1129}}^1$

素因数の和:2075

約数の個数: 24

約数和(自身を含む): 44517480

約数和(自身を除く): 23360020

約数列:

[1, 2, 4, 5, 10, 20, 937, 1129, 1874, 2258, 3748, 4516, 4685, 5645, 9370, 11290, 18740, 22580, 1057873, 2115746, 4231492, 5289365, 10578730, 21157460]

約数ペア:

[(1, 21157460), (2, 10578730), (4, 5289365), (5, 4231492), (10, 2115746), (20, 1057873), (937, 22580), (1129, 18740), (1874, 11290), (2258, 9370), (3748, 5645), (4516, 4685)]