20984913

素因数分解:

$3^4\times {\mathrm{449}}^1\times {\mathrm{577}}^1$

素因数の和:1038

約数の個数: 20

約数和(自身を含む): 31472100

約数和(自身を除く): 10487187

約数列:

[1, 3, 9, 27, 81, 449, 577, 1347, 1731, 4041, 5193, 12123, 15579, 36369, 46737, 259073, 777219, 2331657, 6994971, 20984913]

約数ペア:

[(1, 20984913), (3, 6994971), (9, 2331657), (27, 777219), (81, 259073), (449, 46737), (577, 36369), (1347, 15579), (1731, 12123), (4041, 5193)]