129137720

素因数分解:

$2^3\times 5^1\times {\mathrm{3228443}}^1$

素因数の和:3228454

約数の個数: 16

約数和(自身を含む): 290559960

約数和(自身を除く): 161422240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3228443, 6456886, 12913772, 16142215, 25827544, 32284430, 64568860, 129137720]

約数ペア:

[(1, 129137720), (2, 64568860), (4, 32284430), (5, 25827544), (8, 16142215), (10, 12913772), (20, 6456886), (40, 3228443)]