21901293

素因数分解:

$3^3\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{337}}^1$

素因数の和:458

約数の個数: 32

約数和(自身を含む): 34070400

約数和(自身を除く): 12169107

約数列:

[1, 3, 9, 27, 29, 83, 87, 249, 261, 337, 747, 783, 1011, 2241, 2407, 3033, 7221, 9099, 9773, 21663, 27971, 29319, 64989, 83913, 87957, 251739, 263871, 755217, 811159, 2433477, 7300431, 21901293]

約数ペア:

[(1, 21901293), (3, 7300431), (9, 2433477), (27, 811159), (29, 755217), (83, 263871), (87, 251739), (249, 87957), (261, 83913), (337, 64989), (747, 29319), (783, 27971), (1011, 21663), (2241, 9773), (2407, 9099), (3033, 7221)]