20917897

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{20897}}^1$

素因数の和:20928

約数の個数: 16

約数和(自身を含む): 28086912

約数和(自身を除く): 7169015

約数列:

[1, 7, 11, 13, 77, 91, 143, 1001, 20897, 146279, 229867, 271661, 1609069, 1901627, 2988271, 20917897]

約数ペア:

[(1, 20917897), (7, 2988271), (11, 1901627), (13, 1609069), (77, 271661), (91, 229867), (143, 146279), (1001, 20897)]