139238680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{497281}}^1$

素因数の和:497299

約数の個数: 32

約数和(自身を含む): 358043040

約数和(自身を除く): 218804360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 497281, 994562, 1989124, 2486405, 3480967, 3978248, 4972810, 6961934, 9945620, 13923868, 17404835, 19891240, 27847736, 34809670, 69619340, 139238680]

約数ペア:

[(1, 139238680), (2, 69619340), (4, 34809670), (5, 27847736), (7, 19891240), (8, 17404835), (10, 13923868), (14, 9945620), (20, 6961934), (28, 4972810), (35, 3978248), (40, 3480967), (56, 2486405), (70, 1989124), (140, 994562), (280, 497281)]