208491220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1489223}}^1$

素因数の和:1489239

約数の個数: 24

約数和(自身を含む): 500379264

約数和(自身を除く): 291888044

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1489223, 2978446, 5956892, 7446115, 10424561, 14892230, 20849122, 29784460, 41698244, 52122805, 104245610, 208491220]

約数ペア:

[(1, 208491220), (2, 104245610), (4, 52122805), (5, 41698244), (7, 29784460), (10, 20849122), (14, 14892230), (20, 10424561), (28, 7446115), (35, 5956892), (70, 2978446), (140, 1489223)]