21319443

素因数分解:

$3^4\times {\mathrm{43}}^1\times {\mathrm{6121}}^1$

素因数の和:6176

約数の個数: 20

約数和(自身を含む): 32593528

約数和(自身を除く): 11274085

約数列:

[1, 3, 9, 27, 43, 81, 129, 387, 1161, 3483, 6121, 18363, 55089, 165267, 263203, 495801, 789609, 2368827, 7106481, 21319443]

約数ペア:

[(1, 21319443), (3, 7106481), (9, 2368827), (27, 789609), (43, 495801), (81, 263203), (129, 165267), (387, 55089), (1161, 18363), (3483, 6121)]