21072238

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{5351}}^1$

素因数の和:5543

約数の個数: 16

約数和(自身を含む): 34680960

約数和(自身を除く): 13608722

約数列:

[1, 2, 11, 22, 179, 358, 1969, 3938, 5351, 10702, 58861, 117722, 957829, 1915658, 10536119, 21072238]

約数ペア:

[(1, 21072238), (2, 10536119), (11, 1915658), (22, 957829), (179, 117722), (358, 58861), (1969, 10702), (3938, 5351)]