639212

素因数分解:

$2^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{617}}^1$

素因数の和:665

約数の個数: 24

約数和(自身を含む): 1315104

約数和(自身を除く): 675892

約数列:

[1, 2, 4, 7, 14, 28, 37, 74, 148, 259, 518, 617, 1036, 1234, 2468, 4319, 8638, 17276, 22829, 45658, 91316, 159803, 319606, 639212]

約数ペア:

[(1, 639212), (2, 319606), (4, 159803), (7, 91316), (14, 45658), (28, 22829), (37, 17276), (74, 8638), (148, 4319), (259, 2468), (518, 1234), (617, 1036)]