19745242

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{12641}}^1$

素因数の和:12725

約数の個数: 16

約数和(自身を含む): 32768064

約数和(自身を除く): 13022822

約数列:

[1, 2, 11, 22, 71, 142, 781, 1562, 12641, 25282, 139051, 278102, 897511, 1795022, 9872621, 19745242]

約数ペア:

[(1, 19745242), (2, 9872621), (11, 1795022), (22, 897511), (71, 278102), (142, 139051), (781, 25282), (1562, 12641)]