19997061

素因数分解:

$3^1\times 7^1\times {\mathrm{181}}^1\times {\mathrm{5261}}^1$

素因数の和:5452

約数の個数: 16

約数和(自身を含む): 30645888

約数和(自身を除く): 10648827

約数列:

[1, 3, 7, 21, 181, 543, 1267, 3801, 5261, 15783, 36827, 110481, 952241, 2856723, 6665687, 19997061]

約数ペア:

[(1, 19997061), (3, 6665687), (7, 2856723), (21, 952241), (181, 110481), (543, 36827), (1267, 15783), (3801, 5261)]