21081363

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{2803}}^1$

素因数の和:2938

約数の個数: 16

約数和(自身を含む): 29610240

約数和(自身を除く): 8528877

約数列:

[1, 3, 23, 69, 109, 327, 2507, 2803, 7521, 8409, 64469, 193407, 305527, 916581, 7027121, 21081363]

約数ペア:

[(1, 21081363), (3, 7027121), (23, 916581), (69, 305527), (109, 193407), (327, 64469), (2507, 8409), (2803, 7521)]