208495420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1489253}}^1$

素因数の和:1489269

約数の個数: 24

約数和(自身を含む): 500389344

約数和(自身を除く): 291893924

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1489253, 2978506, 5957012, 7446265, 10424771, 14892530, 20849542, 29785060, 41699084, 52123855, 104247710, 208495420]

約数ペア:

[(1, 208495420), (2, 104247710), (4, 52123855), (5, 41699084), (7, 29785060), (10, 20849542), (14, 14892530), (20, 10424771), (28, 7446265), (35, 5957012), (70, 2978506), (140, 1489253)]