12789680

素因数分解:

$2^4\times 5^1\times {\mathrm{159871}}^1$

素因数の和:159884

約数の個数: 20

約数和(自身を含む): 29736192

約数和(自身を除く): 16946512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 159871, 319742, 639484, 799355, 1278968, 1598710, 2557936, 3197420, 6394840, 12789680]

約数ペア:

[(1, 12789680), (2, 6394840), (4, 3197420), (5, 2557936), (8, 1598710), (10, 1278968), (16, 799355), (20, 639484), (40, 319742), (80, 159871)]