138935240

素因数分解:

$2^3\times 5^1\times {\mathrm{389}}^1\times {\mathrm{8929}}^1$

素因数の和:9329

約数の個数: 32

約数和(自身を含む): 313443000

約数和(自身を除く): 174507760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 389, 778, 1556, 1945, 3112, 3890, 7780, 8929, 15560, 17858, 35716, 44645, 71432, 89290, 178580, 357160, 3473381, 6946762, 13893524, 17366905, 27787048, 34733810, 69467620, 138935240]

約数ペア:

[(1, 138935240), (2, 69467620), (4, 34733810), (5, 27787048), (8, 17366905), (10, 13893524), (20, 6946762), (40, 3473381), (389, 357160), (778, 178580), (1556, 89290), (1945, 71432), (3112, 44645), (3890, 35716), (7780, 17858), (8929, 15560)]