28878740

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{131267}}^1$

素因数の和:131287

約数の個数: 24

約数和(自身を含む): 66159072

約数和(自身を除く): 37280332

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 131267, 262534, 525068, 656335, 1312670, 1443937, 2625340, 2887874, 5775748, 7219685, 14439370, 28878740]

約数ペア:

[(1, 28878740), (2, 14439370), (4, 7219685), (5, 5775748), (10, 2887874), (11, 2625340), (20, 1443937), (22, 1312670), (44, 656335), (55, 525068), (110, 262534), (220, 131267)]