129402580

素因数分解:

$2^2\times 5^1\times {\mathrm{6470129}}^1$

素因数の和:6470138

約数の個数: 12

約数和(自身を含む): 271745460

約数和(自身を除く): 142342880

約数列:

[1, 2, 4, 5, 10, 20, 6470129, 12940258, 25880516, 32350645, 64701290, 129402580]

約数ペア:

[(1, 129402580), (2, 64701290), (4, 32350645), (5, 25880516), (10, 12940258), (20, 6470129)]