18210040

素因数分解:

$2^3\times 5^1\times {\mathrm{137}}^1\times {\mathrm{3323}}^1$

素因数の和:3471

約数の個数: 32

約数和(自身を含む): 41284080

約数和(自身を除く): 23074040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 137, 274, 548, 685, 1096, 1370, 2740, 3323, 5480, 6646, 13292, 16615, 26584, 33230, 66460, 132920, 455251, 910502, 1821004, 2276255, 3642008, 4552510, 9105020, 18210040]

約数ペア:

[(1, 18210040), (2, 9105020), (4, 4552510), (5, 3642008), (8, 2276255), (10, 1821004), (20, 910502), (40, 455251), (137, 132920), (274, 66460), (548, 33230), (685, 26584), (1096, 16615), (1370, 13292), (2740, 6646), (3323, 5480)]