21522008

素因数分解:

$2^3\times {\mathrm{67}}^1\times {\mathrm{40153}}^1$

素因数の和:40226

約数の個数: 16

約数和(自身を含む): 40957080

約数和(自身を除く): 19435072

約数列:

[1, 2, 4, 8, 67, 134, 268, 536, 40153, 80306, 160612, 321224, 2690251, 5380502, 10761004, 21522008]

約数ペア:

[(1, 21522008), (2, 10761004), (4, 5380502), (8, 2690251), (67, 321224), (134, 160612), (268, 80306), (536, 40153)]