19982169

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{31271}}^1$

素因数の和:31348

約数の個数: 12

約数和(自身を含む): 29270592

約数和(自身を除く): 9288423

約数列:

[1, 3, 9, 71, 213, 639, 31271, 93813, 281439, 2220241, 6660723, 19982169]

約数ペア:

[(1, 19982169), (3, 6660723), (9, 2220241), (71, 281439), (213, 93813), (639, 31271)]