640264604

素因数分解:

$2^2\times 7^1\times {\mathrm{73}}^1\times {\mathrm{313241}}^1$

素因数の和:313325

約数の個数: 24

約数和(自身を含む): 1298074848

約数和(自身を除く): 657810244

約数列:

[1, 2, 4, 7, 14, 28, 73, 146, 292, 511, 1022, 2044, 313241, 626482, 1252964, 2192687, 4385374, 8770748, 22866593, 45733186, 91466372, 160066151, 320132302, 640264604]

約数ペア:

[(1, 640264604), (2, 320132302), (4, 160066151), (7, 91466372), (14, 45733186), (28, 22866593), (73, 8770748), (146, 4385374), (292, 2192687), (511, 1252964), (1022, 626482), (2044, 313241)]