1821609

素因数分解:

$3^4\times {\mathrm{43}}^1\times {\mathrm{523}}^1$

素因数の和:578

約数の個数: 20

約数和(自身を含む): 2789776

約数和(自身を除く): 968167

約数列:

[1, 3, 9, 27, 43, 81, 129, 387, 523, 1161, 1569, 3483, 4707, 14121, 22489, 42363, 67467, 202401, 607203, 1821609]

約数ペア:

[(1, 1821609), (3, 607203), (9, 202401), (27, 67467), (43, 42363), (81, 22489), (129, 14121), (387, 4707), (523, 3483), (1161, 1569)]