21811340

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{64151}}^1$

素因数の和:64177

約数の個数: 24

約数和(自身を含む): 48498912

約数和(自身を除く): 26687572

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 64151, 128302, 256604, 320755, 641510, 1090567, 1283020, 2181134, 4362268, 5452835, 10905670, 21811340]

約数ペア:

[(1, 21811340), (2, 10905670), (4, 5452835), (5, 4362268), (10, 2181134), (17, 1283020), (20, 1090567), (34, 641510), (68, 320755), (85, 256604), (170, 128302), (340, 64151)]