209972240

素因数分解:

$2^4\times 5^1\times {\mathrm{2624653}}^1$

素因数の和:2624666

約数の個数: 20

約数和(自身を含む): 488185644

約数和(自身を除く): 278213404

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2624653, 5249306, 10498612, 13123265, 20997224, 26246530, 41994448, 52493060, 104986120, 209972240]

約数ペア:

[(1, 209972240), (2, 104986120), (4, 52493060), (5, 41994448), (8, 26246530), (10, 20997224), (16, 13123265), (20, 10498612), (40, 5249306), (80, 2624653)]