209301253

素因数分解:

$7^1\times {\mathrm{43}}^2\times {\mathrm{103}}^1\times {\mathrm{157}}^1$

素因数の和:353

約数の個数: 24

約数和(自身を含む): 248846208

約数和(自身を除く): 39544955

約数列:

[1, 7, 43, 103, 157, 301, 721, 1099, 1849, 4429, 6751, 12943, 16171, 31003, 47257, 113197, 190447, 290293, 695353, 1333129, 2032051, 4867471, 29900179, 209301253]

約数ペア:

[(1, 209301253), (7, 29900179), (43, 4867471), (103, 2032051), (157, 1333129), (301, 695353), (721, 290293), (1099, 190447), (1849, 113197), (4429, 47257), (6751, 31003), (12943, 16171)]