21611751

素因数分解:

$3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{16871}}^1$

素因数の和:16942

約数の個数: 16

約数和(自身を含む): 33474048

約数和(自身を除く): 11862297

約数列:

[1, 3, 7, 21, 61, 183, 427, 1281, 16871, 50613, 118097, 354291, 1029131, 3087393, 7203917, 21611751]

約数ペア:

[(1, 21611751), (3, 7203917), (7, 3087393), (21, 1029131), (61, 354291), (183, 118097), (427, 50613), (1281, 16871)]