30821721

素因数分解:

$3^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{10559}}^1$

素因数の和:10708

約数の個数: 16

約数和(自身を含む): 47308800

約数和(自身を除く): 16487079

約数列:

[1, 3, 7, 21, 139, 417, 973, 2919, 10559, 31677, 73913, 221739, 1467701, 4403103, 10273907, 30821721]

約数ペア:

[(1, 30821721), (3, 10273907), (7, 4403103), (21, 1467701), (139, 221739), (417, 73913), (973, 31677), (2919, 10559)]