42780820

素因数分解:

$2^2\times 5^1\times {\mathrm{1259}}^1\times {\mathrm{1699}}^1$

素因数の和:2967

約数の個数: 24

約数和(自身を含む): 89964000

約数和(自身を除く): 47183180

約数列:

[1, 2, 4, 5, 10, 20, 1259, 1699, 2518, 3398, 5036, 6295, 6796, 8495, 12590, 16990, 25180, 33980, 2139041, 4278082, 8556164, 10695205, 21390410, 42780820]

約数ペア:

[(1, 42780820), (2, 21390410), (4, 10695205), (5, 8556164), (10, 4278082), (20, 2139041), (1259, 33980), (1699, 25180), (2518, 16990), (3398, 12590), (5036, 8495), (6295, 6796)]