21945573

素因数分解:

$3^5\times {\mathrm{13}}^1\times {\mathrm{6947}}^1$

素因数の和:6975

約数の個数: 24

約数和(自身を含む): 35407008

約数和(自身を除く): 13461435

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 243, 351, 1053, 3159, 6947, 20841, 62523, 90311, 187569, 270933, 562707, 812799, 1688121, 2438397, 7315191, 21945573]

約数ペア:

[(1, 21945573), (3, 7315191), (9, 2438397), (13, 1688121), (27, 812799), (39, 562707), (81, 270933), (117, 187569), (243, 90311), (351, 62523), (1053, 20841), (3159, 6947)]