21730479

素因数分解:

$3^1\times {\mathrm{83}}^1\times {\mathrm{197}}^1\times {\mathrm{443}}^1$

素因数の和:726

約数の個数: 16

約数和(自身を含む): 29538432

約数和(自身を除く): 7807953

約数列:

[1, 3, 83, 197, 249, 443, 591, 1329, 16351, 36769, 49053, 87271, 110307, 261813, 7243493, 21730479]

約数ペア:

[(1, 21730479), (3, 7243493), (83, 261813), (197, 110307), (249, 87271), (443, 49053), (591, 36769), (1329, 16351)]