12643695

素因数分解:

$3^4\times 5^1\times {\mathrm{31219}}^1$

素因数の和:31236

約数の個数: 20

約数和(自身を含む): 22665720

約数和(自身を除く): 10022025

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 31219, 93657, 156095, 280971, 468285, 842913, 1404855, 2528739, 4214565, 12643695]

約数ペア:

[(1, 12643695), (3, 4214565), (5, 2528739), (9, 1404855), (15, 842913), (27, 468285), (45, 280971), (81, 156095), (135, 93657), (405, 31219)]