55220720

素因数分解:

$2^4\times 5^1\times {\mathrm{690259}}^1$

素因数の和:690272

約数の個数: 20

約数和(自身を含む): 128388360

約数和(自身を除く): 73167640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 690259, 1380518, 2761036, 3451295, 5522072, 6902590, 11044144, 13805180, 27610360, 55220720]

約数ペア:

[(1, 55220720), (2, 27610360), (4, 13805180), (5, 11044144), (8, 6902590), (10, 5522072), (16, 3451295), (20, 2761036), (40, 1380518), (80, 690259)]