21744560

素因数分解:

$2^4\times 5^1\times {\mathrm{271807}}^1$

素因数の和:271820

約数の個数: 20

約数和(自身を含む): 50556288

約数和(自身を除く): 28811728

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 271807, 543614, 1087228, 1359035, 2174456, 2718070, 4348912, 5436140, 10872280, 21744560]

約数ペア:

[(1, 21744560), (2, 10872280), (4, 5436140), (5, 4348912), (8, 2718070), (10, 2174456), (16, 1359035), (20, 1087228), (40, 543614), (80, 271807)]