13780720

素因数分解:

$2^4\times 5^1\times {\mathrm{172259}}^1$

素因数の和:172272

約数の個数: 20

約数和(自身を含む): 32040360

約数和(自身を除く): 18259640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 172259, 344518, 689036, 861295, 1378072, 1722590, 2756144, 3445180, 6890360, 13780720]

約数ペア:

[(1, 13780720), (2, 6890360), (4, 3445180), (5, 2756144), (8, 1722590), (10, 1378072), (16, 861295), (20, 689036), (40, 344518), (80, 172259)]