2561180

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1621}}^1$

素因数の和:1709

約数の個数: 24

約数和(自身を含む): 5449920

約数和(自身を除く): 2888740

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 1621, 3242, 6484, 8105, 16210, 32420, 128059, 256118, 512236, 640295, 1280590, 2561180]

約数ペア:

[(1, 2561180), (2, 1280590), (4, 640295), (5, 512236), (10, 256118), (20, 128059), (79, 32420), (158, 16210), (316, 8105), (395, 6484), (790, 3242), (1580, 1621)]