20845990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{189509}}^1$

素因数の和:189527

約数の個数: 16

約数和(自身を含む): 40934160

約数和(自身を除く): 20088170

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 189509, 379018, 947545, 1895090, 2084599, 4169198, 10422995, 20845990]

約数ペア:

[(1, 20845990), (2, 10422995), (5, 4169198), (10, 2084599), (11, 1895090), (22, 947545), (55, 379018), (110, 189509)]