918220180

素因数分解:

$2^2\times 5^1\times {\mathrm{45911009}}^1$

素因数の和:45911018

約数の個数: 12

約数和(自身を含む): 1928262420

約数和(自身を除く): 1010042240

約数列:

[1, 2, 4, 5, 10, 20, 45911009, 91822018, 183644036, 229555045, 459110090, 918220180]

約数ペア:

[(1, 918220180), (2, 459110090), (4, 229555045), (5, 183644036), (10, 91822018), (20, 45911009)]