28283860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{128563}}^1$

素因数の和:128583

約数の個数: 24

約数和(自身を含む): 64796256

約数和(自身を除く): 36512396

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 128563, 257126, 514252, 642815, 1285630, 1414193, 2571260, 2828386, 5656772, 7070965, 14141930, 28283860]

約数ペア:

[(1, 28283860), (2, 14141930), (4, 7070965), (5, 5656772), (10, 2828386), (11, 2571260), (20, 1414193), (22, 1285630), (44, 642815), (55, 514252), (110, 257126), (220, 128563)]