18107920

素因数分解:

$2^4\times 5^1\times {\mathrm{151}}^1\times {\mathrm{1499}}^1$

素因数の和:1663

約数の個数: 40

約数和(自身を含む): 42408000

約数和(自身を除く): 24300080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 151, 302, 604, 755, 1208, 1499, 1510, 2416, 2998, 3020, 5996, 6040, 7495, 11992, 12080, 14990, 23984, 29980, 59960, 119920, 226349, 452698, 905396, 1131745, 1810792, 2263490, 3621584, 4526980, 9053960, 18107920]

約数ペア:

[(1, 18107920), (2, 9053960), (4, 4526980), (5, 3621584), (8, 2263490), (10, 1810792), (16, 1131745), (20, 905396), (40, 452698), (80, 226349), (151, 119920), (302, 59960), (604, 29980), (755, 23984), (1208, 14990), (1499, 12080), (1510, 11992), (2416, 7495), (2998, 6040), (3020, 5996)]