21644960

素因数分解:

$2^5\times 5^1\times {\mathrm{135281}}^1$

素因数の和:135296

約数の個数: 24

約数和(自身を含む): 51136596

約数和(自身を除く): 29491636

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 135281, 270562, 541124, 676405, 1082248, 1352810, 2164496, 2705620, 4328992, 5411240, 10822480, 21644960]

約数ペア:

[(1, 21644960), (2, 10822480), (4, 5411240), (5, 4328992), (8, 2705620), (10, 2164496), (16, 1352810), (20, 1082248), (32, 676405), (40, 541124), (80, 270562), (160, 135281)]