20863665

素因数分解:

$3^2\times 5^1\times {\mathrm{541}}^1\times {\mathrm{857}}^1$

素因数の和:1409

約数の個数: 24

約数和(自身を含む): 36272808

約数和(自身を除く): 15409143

約数列:

[1, 3, 5, 9, 15, 45, 541, 857, 1623, 2571, 2705, 4285, 4869, 7713, 8115, 12855, 24345, 38565, 463637, 1390911, 2318185, 4172733, 6954555, 20863665]

約数ペア:

[(1, 20863665), (3, 6954555), (5, 4172733), (9, 2318185), (15, 1390911), (45, 463637), (541, 38565), (857, 24345), (1623, 12855), (2571, 8115), (2705, 7713), (4285, 4869)]