12515920

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{1549}}^1$

素因数の和:1663

約数の個数: 40

約数和(自身を含む): 29406600

約数和(自身を除く): 16890680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 202, 404, 505, 808, 1010, 1549, 1616, 2020, 3098, 4040, 6196, 7745, 8080, 12392, 15490, 24784, 30980, 61960, 123920, 156449, 312898, 625796, 782245, 1251592, 1564490, 2503184, 3128980, 6257960, 12515920]

約数ペア:

[(1, 12515920), (2, 6257960), (4, 3128980), (5, 2503184), (8, 1564490), (10, 1251592), (16, 782245), (20, 625796), (40, 312898), (80, 156449), (101, 123920), (202, 61960), (404, 30980), (505, 24784), (808, 15490), (1010, 12392), (1549, 8080), (1616, 7745), (2020, 6196), (3098, 4040)]