21561657

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{6661}}^1$

素因数の和:6760

約数の個数: 16

約数和(自身を含む): 31338048

約数和(自身を除く): 9776391

約数列:

[1, 3, 13, 39, 83, 249, 1079, 3237, 6661, 19983, 86593, 259779, 552863, 1658589, 7187219, 21561657]

約数ペア:

[(1, 21561657), (3, 7187219), (13, 1658589), (39, 552863), (83, 259779), (249, 86593), (1079, 19983), (3237, 6661)]