20128357640

素因数分解:

$2^3\times 5^1\times {\mathrm{6607}}^1\times {\mathrm{76163}}^1$

素因数の和:82781

約数の個数: 32

約数和(自身を含む): 45296254080

約数和(自身を除く): 25167896440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 6607, 13214, 26428, 33035, 52856, 66070, 76163, 132140, 152326, 264280, 304652, 380815, 609304, 761630, 1523260, 3046520, 503208941, 1006417882, 2012835764, 2516044705, 4025671528, 5032089410, 10064178820, 20128357640]

約数ペア:

[(1, 20128357640), (2, 10064178820), (4, 5032089410), (5, 4025671528), (8, 2516044705), (10, 2012835764), (20, 1006417882), (40, 503208941), (6607, 3046520), (13214, 1523260), (26428, 761630), (33035, 609304), (52856, 380815), (66070, 304652), (76163, 264280), (132140, 152326)]