20918990

素因数分解:

$2^1\times 5^1\times {\mathrm{1031}}^1\times {\mathrm{2029}}^1$

素因数の和:3067

約数の個数: 16

約数和(自身を含む): 37709280

約数和(自身を除く): 16790290

約数列:

[1, 2, 5, 10, 1031, 2029, 2062, 4058, 5155, 10145, 10310, 20290, 2091899, 4183798, 10459495, 20918990]

約数ペア:

[(1, 20918990), (2, 10459495), (5, 4183798), (10, 2091899), (1031, 20290), (2029, 10310), (2062, 10145), (4058, 5155)]