20290815

素因数分解:

$3^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{2137}}^1$

素因数の和:2359

約数の個数: 24

約数和(自身を含む): 35353968

約数和(自身を除く): 15063153

約数列:

[1, 3, 5, 9, 15, 45, 211, 633, 1055, 1899, 2137, 3165, 6411, 9495, 10685, 19233, 32055, 96165, 450907, 1352721, 2254535, 4058163, 6763605, 20290815]

約数ペア:

[(1, 20290815), (3, 6763605), (5, 4058163), (9, 2254535), (15, 1352721), (45, 450907), (211, 96165), (633, 32055), (1055, 19233), (1899, 10685), (2137, 9495), (3165, 6411)]