20328980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{145207}}^1$

素因数の和:145223

約数の個数: 24

約数和(自身を含む): 48789888

約数和(自身を除く): 28460908

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 145207, 290414, 580828, 726035, 1016449, 1452070, 2032898, 2904140, 4065796, 5082245, 10164490, 20328980]

約数ペア:

[(1, 20328980), (2, 10164490), (4, 5082245), (5, 4065796), (7, 2904140), (10, 2032898), (14, 1452070), (20, 1016449), (28, 726035), (35, 580828), (70, 290414), (140, 145207)]