28206860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{128213}}^1$

素因数の和:128233

約数の個数: 24

約数和(自身を含む): 64619856

約数和(自身を除く): 36412996

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 128213, 256426, 512852, 641065, 1282130, 1410343, 2564260, 2820686, 5641372, 7051715, 14103430, 28206860]

約数ペア:

[(1, 28206860), (2, 14103430), (4, 7051715), (5, 5641372), (10, 2820686), (11, 2564260), (20, 1410343), (22, 1282130), (44, 641065), (55, 512852), (110, 256426), (220, 128213)]