55144720

素因数分解:

$2^4\times 5^1\times {\mathrm{689309}}^1$

素因数の和:689322

約数の個数: 20

約数和(自身を含む): 128211660

約数和(自身を除く): 73066940

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 689309, 1378618, 2757236, 3446545, 5514472, 6893090, 11028944, 13786180, 27572360, 55144720]

約数ペア:

[(1, 55144720), (2, 27572360), (4, 13786180), (5, 11028944), (8, 6893090), (10, 5514472), (16, 3446545), (20, 2757236), (40, 1378618), (80, 689309)]