28012820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{127331}}^1$

素因数の和:127351

約数の個数: 24

約数和(自身を含む): 64175328

約数和(自身を除く): 36162508

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 127331, 254662, 509324, 636655, 1273310, 1400641, 2546620, 2801282, 5602564, 7003205, 14006410, 28012820]

約数ペア:

[(1, 28012820), (2, 14006410), (4, 7003205), (5, 5602564), (10, 2801282), (11, 2546620), (20, 1400641), (22, 1273310), (44, 636655), (55, 509324), (110, 254662), (220, 127331)]