20258169

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{491}}^1\times {\mathrm{809}}^1$

素因数の和:1320

約数の個数: 16

約数和(自身を含む): 28693440

約数和(自身を除く): 8435271

約数列:

[1, 3, 17, 51, 491, 809, 1473, 2427, 8347, 13753, 25041, 41259, 397219, 1191657, 6752723, 20258169]

約数ペア:

[(1, 20258169), (3, 6752723), (17, 1191657), (51, 397219), (491, 41259), (809, 25041), (1473, 13753), (2427, 8347)]