680312560

素因数分解:

$2^4\times 5^1\times {\mathrm{8503907}}^1$

素因数の和:8503920

約数の個数: 20

約数和(自身を含む): 1581726888

約数和(自身を除く): 901414328

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 8503907, 17007814, 34015628, 42519535, 68031256, 85039070, 136062512, 170078140, 340156280, 680312560]

約数ペア:

[(1, 680312560), (2, 340156280), (4, 170078140), (5, 136062512), (8, 85039070), (10, 68031256), (16, 42519535), (20, 34015628), (40, 17007814), (80, 8503907)]