20018904

素因数分解:

$2^3\times 3^1\times {\mathrm{521}}^1\times {\mathrm{1601}}^1$

素因数の和:2131

約数の個数: 32

約数和(自身を含む): 50174640

約数和(自身を除く): 30155736

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 521, 1042, 1563, 1601, 2084, 3126, 3202, 4168, 4803, 6252, 6404, 9606, 12504, 12808, 19212, 38424, 834121, 1668242, 2502363, 3336484, 5004726, 6672968, 10009452, 20018904]

約数ペア:

[(1, 20018904), (2, 10009452), (3, 6672968), (4, 5004726), (6, 3336484), (8, 2502363), (12, 1668242), (24, 834121), (521, 38424), (1042, 19212), (1563, 12808), (1601, 12504), (2084, 9606), (3126, 6404), (3202, 6252), (4168, 4803)]