197491707

素因数分解:

$3^2\times 7^2\times {\mathrm{447827}}^1$

素因数の和:447847

約数の個数: 18

約数和(自身を含む): 331840548

約数和(自身を除く): 134348841

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 447827, 1343481, 3134789, 4030443, 9404367, 21943523, 28213101, 65830569, 197491707]

約数ペア:

[(1, 197491707), (3, 65830569), (7, 28213101), (9, 21943523), (21, 9404367), (49, 4030443), (63, 3134789), (147, 1343481), (441, 447827)]