20841705

素因数分解:

$3^4\times 5^1\times {\mathrm{51461}}^1$

素因数の和:51478

約数の個数: 20

約数和(自身を含む): 37361412

約数和(自身を除く): 16519707

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 51461, 154383, 257305, 463149, 771915, 1389447, 2315745, 4168341, 6947235, 20841705]

約数ペア:

[(1, 20841705), (3, 6947235), (5, 4168341), (9, 2315745), (15, 1389447), (27, 771915), (45, 463149), (81, 257305), (135, 154383), (405, 51461)]