18218680

素因数分解:

$2^3\times 5^1\times {\mathrm{563}}^1\times {\mathrm{809}}^1$

素因数の和:1383

約数の個数: 32

約数和(自身を含む): 41115600

約数和(自身を除く): 22896920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 563, 809, 1126, 1618, 2252, 2815, 3236, 4045, 4504, 5630, 6472, 8090, 11260, 16180, 22520, 32360, 455467, 910934, 1821868, 2277335, 3643736, 4554670, 9109340, 18218680]

約数ペア:

[(1, 18218680), (2, 9109340), (4, 4554670), (5, 3643736), (8, 2277335), (10, 1821868), (20, 910934), (40, 455467), (563, 32360), (809, 22520), (1126, 16180), (1618, 11260), (2252, 8090), (2815, 6472), (3236, 5630), (4045, 4504)]