21948651

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{8741}}^1$

素因数の和:8784

約数の個数: 20

約数和(自身を含む): 33849024

約数和(自身を除く): 11900373

約数列:

[1, 3, 9, 27, 31, 81, 93, 279, 837, 2511, 8741, 26223, 78669, 236007, 270971, 708021, 812913, 2438739, 7316217, 21948651]

約数ペア:

[(1, 21948651), (3, 7316217), (9, 2438739), (27, 812913), (31, 708021), (81, 270971), (93, 236007), (279, 78669), (837, 26223), (2511, 8741)]