21247107

素因数分解:

$3^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{15101}}^1$

素因数の和:15178

約数の個数: 16

約数和(自身を含む): 32861952

約数和(自身を除く): 11614845

約数列:

[1, 3, 7, 21, 67, 201, 469, 1407, 15101, 45303, 105707, 317121, 1011767, 3035301, 7082369, 21247107]

約数ペア:

[(1, 21247107), (3, 7082369), (7, 3035301), (21, 1011767), (67, 317121), (201, 105707), (469, 45303), (1407, 15101)]