20851197

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{3821}}^1$

素因数の和:3948

約数の個数: 16

約数和(自身を含む): 29719872

約数和(自身を除く): 8868675

約数列:

[1, 3, 17, 51, 107, 321, 1819, 3821, 5457, 11463, 64957, 194871, 408847, 1226541, 6950399, 20851197]

約数ペア:

[(1, 20851197), (3, 6950399), (17, 1226541), (51, 408847), (107, 194871), (321, 64957), (1819, 11463), (3821, 5457)]