28126780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{127849}}^1$

素因数の和:127869

約数の個数: 24

約数和(自身を含む): 64436400

約数和(自身を除く): 36309620

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 127849, 255698, 511396, 639245, 1278490, 1406339, 2556980, 2812678, 5625356, 7031695, 14063390, 28126780]

約数ペア:

[(1, 28126780), (2, 14063390), (4, 7031695), (5, 5625356), (10, 2812678), (11, 2556980), (20, 1406339), (22, 1278490), (44, 639245), (55, 511396), (110, 255698), (220, 127849)]