18140225

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{131}}^1\times {\mathrm{191}}^1$

素因数の和:361

約数の個数: 24

約数和(自身を含む): 23569920

約数和(自身を除く): 5429695

約数列:

[1, 5, 25, 29, 131, 145, 191, 655, 725, 955, 3275, 3799, 4775, 5539, 18995, 25021, 27695, 94975, 125105, 138475, 625525, 725609, 3628045, 18140225]

約数ペア:

[(1, 18140225), (5, 3628045), (25, 725609), (29, 625525), (131, 138475), (145, 125105), (191, 94975), (655, 27695), (725, 25021), (955, 18995), (3275, 5539), (3799, 4775)]