21477185

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{1051}}^1$

素因数の和:1184

約数の個数: 16

約数和(自身を含む): 26611392

約数和(自身を除く): 5134207

約数列:

[1, 5, 61, 67, 305, 335, 1051, 4087, 5255, 20435, 64111, 70417, 320555, 352085, 4295437, 21477185]

約数ペア:

[(1, 21477185), (5, 4295437), (61, 352085), (67, 320555), (305, 70417), (335, 64111), (1051, 20435), (4087, 5255)]