78889480

素因数分解:

$2^3\times 5^1\times {\mathrm{263}}^1\times {\mathrm{7499}}^1$

素因数の和:7773

約数の個数: 32

約数和(自身を含む): 178200000

約数和(自身を除く): 99310520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 263, 526, 1052, 1315, 2104, 2630, 5260, 7499, 10520, 14998, 29996, 37495, 59992, 74990, 149980, 299960, 1972237, 3944474, 7888948, 9861185, 15777896, 19722370, 39444740, 78889480]

約数ペア:

[(1, 78889480), (2, 39444740), (4, 19722370), (5, 15777896), (8, 9861185), (10, 7888948), (20, 3944474), (40, 1972237), (263, 299960), (526, 149980), (1052, 74990), (1315, 59992), (2104, 37495), (2630, 29996), (5260, 14998), (7499, 10520)]