21836721

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{4157}}^1$

素因数の和:4280

約数の個数: 16

約数和(自身を含む): 31135104

約数和(自身を除く): 9298383

約数列:

[1, 3, 17, 51, 103, 309, 1751, 4157, 5253, 12471, 70669, 212007, 428171, 1284513, 7278907, 21836721]

約数ペア:

[(1, 21836721), (3, 7278907), (17, 1284513), (51, 428171), (103, 212007), (309, 70669), (1751, 12471), (4157, 5253)]