347085

素因数分解:

$3^4\times 5^1\times {\mathrm{857}}^1$

素因数の和:874

約数の個数: 20

約数和(自身を含む): 622908

約数和(自身を除く): 275823

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 857, 2571, 4285, 7713, 12855, 23139, 38565, 69417, 115695, 347085]

約数ペア:

[(1, 347085), (3, 115695), (5, 69417), (9, 38565), (15, 23139), (27, 12855), (45, 7713), (81, 4285), (135, 2571), (405, 857)]