28208620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{128221}}^1$

素因数の和:128241

約数の個数: 24

約数和(自身を含む): 64623888

約数和(自身を除く): 36415268

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 128221, 256442, 512884, 641105, 1282210, 1410431, 2564420, 2820862, 5641724, 7052155, 14104310, 28208620]

約数ペア:

[(1, 28208620), (2, 14104310), (4, 7052155), (5, 5641724), (10, 2820862), (11, 2564420), (20, 1410431), (22, 1282210), (44, 641105), (55, 512884), (110, 256442), (220, 128221)]