77808980

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{94889}}^1$

素因数の和:94939

約数の個数: 24

約数和(自身を含む): 167385960

約数和(自身を除く): 89576980

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 94889, 189778, 379556, 474445, 948890, 1897780, 3890449, 7780898, 15561796, 19452245, 38904490, 77808980]

約数ペア:

[(1, 77808980), (2, 38904490), (4, 19452245), (5, 15561796), (10, 7780898), (20, 3890449), (41, 1897780), (82, 948890), (164, 474445), (205, 379556), (410, 189778), (820, 94889)]