31409289

素因数分解:

$3^4\times {\mathrm{241}}^1\times {\mathrm{1609}}^1$

素因数の和:1862

約数の個数: 20

約数和(自身を含む): 47144020

約数和(自身を除く): 15734731

約数列:

[1, 3, 9, 27, 81, 241, 723, 1609, 2169, 4827, 6507, 14481, 19521, 43443, 130329, 387769, 1163307, 3489921, 10469763, 31409289]

約数ペア:

[(1, 31409289), (3, 10469763), (9, 3489921), (27, 1163307), (81, 387769), (241, 130329), (723, 43443), (1609, 19521), (2169, 14481), (4827, 6507)]