18821620

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{20023}}^1$

素因数の和:20079

約数の個数: 24

約数和(自身を含む): 40368384

約数和(自身を除く): 21546764

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 20023, 40046, 80092, 100115, 200230, 400460, 941081, 1882162, 3764324, 4705405, 9410810, 18821620]

約数ペア:

[(1, 18821620), (2, 9410810), (4, 4705405), (5, 3764324), (10, 1882162), (20, 941081), (47, 400460), (94, 200230), (188, 100115), (235, 80092), (470, 40046), (940, 20023)]