128820440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{460073}}^1$

素因数の和:460091

約数の個数: 32

約数和(自身を含む): 331253280

約数和(自身を除く): 202432840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 460073, 920146, 1840292, 2300365, 3220511, 3680584, 4600730, 6441022, 9201460, 12882044, 16102555, 18402920, 25764088, 32205110, 64410220, 128820440]

約数ペア:

[(1, 128820440), (2, 64410220), (4, 32205110), (5, 25764088), (7, 18402920), (8, 16102555), (10, 12882044), (14, 9201460), (20, 6441022), (28, 4600730), (35, 3680584), (40, 3220511), (56, 2300365), (70, 1840292), (140, 920146), (280, 460073)]