21532959

素因数分解:

$3^5\times 7^1\times {\mathrm{12659}}^1$

素因数の和:12681

約数の個数: 24

約数和(自身を含む): 36865920

約数和(自身を除く): 15332961

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 1701, 12659, 37977, 88613, 113931, 265839, 341793, 797517, 1025379, 2392551, 3076137, 7177653, 21532959]

約数ペア:

[(1, 21532959), (3, 7177653), (7, 3076137), (9, 2392551), (21, 1025379), (27, 797517), (63, 341793), (81, 265839), (189, 113931), (243, 88613), (567, 37977), (1701, 12659)]