21009776787

素因数分解:

$3^3\times {\mathrm{51217}}^1\times {\mathrm{15193}}^1$

素因数の和:66419

約数の個数: 16

約数和(自身を含む): 31128251680

約数和(自身を除く): 10118474893

約数列:

[1, 3, 9, 27, 15193, 45579, 51217, 136737, 153651, 410211, 460953, 1382859, 778139881, 2334419643, 7003258929, 21009776787]

約数ペア:

[(1, 21009776787), (3, 7003258929), (9, 2334419643), (27, 778139881), (15193, 1382859), (45579, 460953), (51217, 410211), (136737, 153651)]