20802987

素因数分解:

$3^5\times {\mathrm{59}}^1\times {\mathrm{1451}}^1$

素因数の和:1525

約数の個数: 24

約数和(自身を含む): 31711680

約数和(自身を除く): 10908693

約数列:

[1, 3, 9, 27, 59, 81, 177, 243, 531, 1451, 1593, 4353, 4779, 13059, 14337, 39177, 85609, 117531, 256827, 352593, 770481, 2311443, 6934329, 20802987]

約数ペア:

[(1, 20802987), (3, 6934329), (9, 2311443), (27, 770481), (59, 352593), (81, 256827), (177, 117531), (243, 85609), (531, 39177), (1451, 14337), (1593, 13059), (4353, 4779)]