20121620

素因数分解:

$2^2\times 5^1\times {\mathrm{563}}^1\times {\mathrm{1787}}^1$

素因数の和:2359

約数の個数: 24

約数和(自身を含む): 42354144

約数和(自身を除く): 22232524

約数列:

[1, 2, 4, 5, 10, 20, 563, 1126, 1787, 2252, 2815, 3574, 5630, 7148, 8935, 11260, 17870, 35740, 1006081, 2012162, 4024324, 5030405, 10060810, 20121620]

約数ペア:

[(1, 20121620), (2, 10060810), (4, 5030405), (5, 4024324), (10, 2012162), (20, 1006081), (563, 35740), (1126, 17870), (1787, 11260), (2252, 8935), (2815, 7148), (3574, 5630)]