21693501

素因数分解:

$3^4\times {\mathrm{107}}^1\times {\mathrm{2503}}^1$

素因数の和:2622

約数の個数: 20

約数和(自身を含む): 32722272

約数和(自身を除く): 11028771

約数列:

[1, 3, 9, 27, 81, 107, 321, 963, 2503, 2889, 7509, 8667, 22527, 67581, 202743, 267821, 803463, 2410389, 7231167, 21693501]

約数ペア:

[(1, 21693501), (3, 7231167), (9, 2410389), (27, 803463), (81, 267821), (107, 202743), (321, 67581), (963, 22527), (2503, 8667), (2889, 7509)]