21160180

素因数分解:

$2^2\times 5^1\times {\mathrm{1058009}}^1$

素因数の和:1058018

約数の個数: 12

約数和(自身を含む): 44436420

約数和(自身を除く): 23276240

約数列:

[1, 2, 4, 5, 10, 20, 1058009, 2116018, 4232036, 5290045, 10580090, 21160180]

約数ペア:

[(1, 21160180), (2, 10580090), (4, 5290045), (5, 4232036), (10, 2116018), (20, 1058009)]