21468681

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{281}}^1\times {\mathrm{653}}^1$

素因数の和:953

約数の個数: 24

約数和(自身を含む): 33565896

約数和(自身を除く): 12097215

約数列:

[1, 3, 9, 13, 39, 117, 281, 653, 843, 1959, 2529, 3653, 5877, 8489, 10959, 25467, 32877, 76401, 183493, 550479, 1651437, 2385409, 7156227, 21468681]

約数ペア:

[(1, 21468681), (3, 7156227), (9, 2385409), (13, 1651437), (39, 550479), (117, 183493), (281, 76401), (653, 32877), (843, 25467), (1959, 10959), (2529, 8489), (3653, 5877)]