21339471

素因数分解:

$3^1\times {\mathrm{17}}^2\times {\mathrm{151}}^1\times {\mathrm{163}}^1$

素因数の和:351

約数の個数: 24

約数和(自身を含む): 30611584

約数和(自身を除く): 9272113

約数列:

[1, 3, 17, 51, 151, 163, 289, 453, 489, 867, 2567, 2771, 7701, 8313, 24613, 43639, 47107, 73839, 130917, 141321, 418421, 1255263, 7113157, 21339471]

約数ペア:

[(1, 21339471), (3, 7113157), (17, 1255263), (51, 418421), (151, 141321), (163, 130917), (289, 73839), (453, 47107), (489, 43639), (867, 24613), (2567, 8313), (2771, 7701)]