127712980

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{80831}}^1$

素因数の和:80919

約数の個数: 24

約数和(自身を含む): 271595520

約数和(自身を除く): 143882540

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 80831, 161662, 323324, 404155, 808310, 1616620, 6385649, 12771298, 25542596, 31928245, 63856490, 127712980]

約数ペア:

[(1, 127712980), (2, 63856490), (4, 31928245), (5, 25542596), (10, 12771298), (20, 6385649), (79, 1616620), (158, 808310), (316, 404155), (395, 323324), (790, 161662), (1580, 80831)]