21406715

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{41}}^1\times {\mathrm{863}}^1$

素因数の和:931

約数の個数: 24

約数和(自身を含む): 28957824

約数和(自身を除く): 7551109

約数列:

[1, 5, 11, 41, 55, 121, 205, 451, 605, 863, 2255, 4315, 4961, 9493, 24805, 35383, 47465, 104423, 176915, 389213, 522115, 1946065, 4281343, 21406715]

約数ペア:

[(1, 21406715), (5, 4281343), (11, 1946065), (41, 522115), (55, 389213), (121, 176915), (205, 104423), (451, 47465), (605, 35383), (863, 24805), (2255, 9493), (4315, 4961)]