28578220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{129901}}^1$

素因数の和:129921

約数の個数: 24

約数和(自身を含む): 65470608

約数和(自身を除く): 36892388

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 129901, 259802, 519604, 649505, 1299010, 1428911, 2598020, 2857822, 5715644, 7144555, 14289110, 28578220]

約数ペア:

[(1, 28578220), (2, 14289110), (4, 7144555), (5, 5715644), (10, 2857822), (11, 2598020), (20, 1428911), (22, 1299010), (44, 649505), (55, 519604), (110, 259802), (220, 129901)]