20342139

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{2221}}^1$

素因数の和:2338

約数の個数: 16

約数和(自身を含む): 28157184

約数和(自身を除く): 7815045

約数列:

[1, 3, 43, 71, 129, 213, 2221, 3053, 6663, 9159, 95503, 157691, 286509, 473073, 6780713, 20342139]

約数ペア:

[(1, 20342139), (3, 6780713), (43, 473073), (71, 286509), (129, 157691), (213, 95503), (2221, 9159), (3053, 6663)]