21753985

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{41}}^1\times {\mathrm{877}}^1$

素因数の和:945

約数の個数: 24

約数和(自身を含む): 29427048

約数和(自身を除く): 7673063

約数列:

[1, 5, 11, 41, 55, 121, 205, 451, 605, 877, 2255, 4385, 4961, 9647, 24805, 35957, 48235, 106117, 179785, 395527, 530585, 1977635, 4350797, 21753985]

約数ペア:

[(1, 21753985), (5, 4350797), (11, 1977635), (41, 530585), (55, 395527), (121, 179785), (205, 106117), (451, 48235), (605, 35957), (877, 24805), (2255, 9647), (4385, 4961)]