28347291

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{12161}}^1$

素因数の和:12211

約数の個数: 24

約数和(自身を含む): 48064224

約数和(自身を除く): 19716933

約数列:

[1, 3, 7, 9, 21, 37, 63, 111, 259, 333, 777, 2331, 12161, 36483, 85127, 109449, 255381, 449957, 766143, 1349871, 3149699, 4049613, 9449097, 28347291]

約数ペア:

[(1, 28347291), (3, 9449097), (7, 4049613), (9, 3149699), (21, 1349871), (37, 766143), (63, 449957), (111, 255381), (259, 109449), (333, 85127), (777, 36483), (2331, 12161)]