644560

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{1151}}^1$

素因数の和:1171

約数の個数: 40

約数和(自身を含む): 1714176

約数和(自身を除く): 1069616

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 1151, 2302, 4604, 5755, 8057, 9208, 11510, 16114, 18416, 23020, 32228, 40285, 46040, 64456, 80570, 92080, 128912, 161140, 322280, 644560]

約数ペア:

[(1, 644560), (2, 322280), (4, 161140), (5, 128912), (7, 92080), (8, 80570), (10, 64456), (14, 46040), (16, 40285), (20, 32228), (28, 23020), (35, 18416), (40, 16114), (56, 11510), (70, 9208), (80, 8057), (112, 5755), (140, 4604), (280, 2302), (560, 1151)]