78708280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{401}}^1\times {\mathrm{701}}^1$

素因数の和:1120

約数の個数: 64

約数和(自身を含む): 203186880

約数和(自身を除く): 124478600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 401, 701, 802, 1402, 1604, 2005, 2804, 2807, 3208, 3505, 4010, 4907, 5608, 5614, 7010, 8020, 9814, 11228, 14020, 14035, 16040, 19628, 22456, 24535, 28040, 28070, 39256, 49070, 56140, 98140, 112280, 196280, 281101, 562202, 1124404, 1405505, 1967707, 2248808, 2811010, 3935414, 5622020, 7870828, 9838535, 11244040, 15741656, 19677070, 39354140, 78708280]

約数ペア:

[(1, 78708280), (2, 39354140), (4, 19677070), (5, 15741656), (7, 11244040), (8, 9838535), (10, 7870828), (14, 5622020), (20, 3935414), (28, 2811010), (35, 2248808), (40, 1967707), (56, 1405505), (70, 1124404), (140, 562202), (280, 281101), (401, 196280), (701, 112280), (802, 98140), (1402, 56140), (1604, 49070), (2005, 39256), (2804, 28070), (2807, 28040), (3208, 24535), (3505, 22456), (4010, 19628), (4907, 16040), (5608, 14035), (5614, 14020), (7010, 11228), (8020, 9814)]