21947266

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{7177}}^1$

素因数の和:7329

約数の個数: 16

約数和(自身を含む): 36177120

約数和(自身を除く): 14229854

約数列:

[1, 2, 11, 22, 139, 278, 1529, 3058, 7177, 14354, 78947, 157894, 997603, 1995206, 10973633, 21947266]

約数ペア:

[(1, 21947266), (2, 10973633), (11, 1995206), (22, 997603), (139, 157894), (278, 78947), (1529, 14354), (3058, 7177)]