28285460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{281}}^1\times {\mathrm{719}}^1$

素因数の和:1016

約数の個数: 48

約数和(自身を含む): 68221440

約数和(自身を除く): 39935980

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 281, 562, 719, 1124, 1405, 1438, 1967, 2810, 2876, 3595, 3934, 5033, 5620, 7190, 7868, 9835, 10066, 14380, 19670, 20132, 25165, 39340, 50330, 100660, 202039, 404078, 808156, 1010195, 1414273, 2020390, 2828546, 4040780, 5657092, 7071365, 14142730, 28285460]

約数ペア:

[(1, 28285460), (2, 14142730), (4, 7071365), (5, 5657092), (7, 4040780), (10, 2828546), (14, 2020390), (20, 1414273), (28, 1010195), (35, 808156), (70, 404078), (140, 202039), (281, 100660), (562, 50330), (719, 39340), (1124, 25165), (1405, 20132), (1438, 19670), (1967, 14380), (2810, 10066), (2876, 9835), (3595, 7868), (3934, 7190), (5033, 5620)]