90909080

素因数分解:

$2^3\times 5^1\times {\mathrm{2272727}}^1$

素因数の和:2272738

約数の個数: 16

約数和(自身を含む): 204545520

約数和(自身を除く): 113636440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2272727, 4545454, 9090908, 11363635, 18181816, 22727270, 45454540, 90909080]

約数ペア:

[(1, 90909080), (2, 45454540), (4, 22727270), (5, 18181816), (8, 11363635), (10, 9090908), (20, 4545454), (40, 2272727)]