258336680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{922631}}^1$

素因数の和:922649

約数の個数: 32

約数和(自身を含む): 664295040

約数和(自身を除く): 405958360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 922631, 1845262, 3690524, 4613155, 6458417, 7381048, 9226310, 12916834, 18452620, 25833668, 32292085, 36905240, 51667336, 64584170, 129168340, 258336680]

約数ペア:

[(1, 258336680), (2, 129168340), (4, 64584170), (5, 51667336), (7, 36905240), (8, 32292085), (10, 25833668), (14, 18452620), (20, 12916834), (28, 9226310), (35, 7381048), (40, 6458417), (56, 4613155), (70, 3690524), (140, 1845262), (280, 922631)]