21597667

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{607}}^1$

素因数の和:667

約数の個数: 32

約数和(自身を含む): 29417472

約数和(自身を除く): 7819805

約数列:

[1, 7, 13, 17, 23, 91, 119, 161, 221, 299, 391, 607, 1547, 2093, 2737, 4249, 5083, 7891, 10319, 13961, 35581, 55237, 72233, 97727, 134147, 181493, 237337, 939029, 1270451, 1661359, 3085381, 21597667]

約数ペア:

[(1, 21597667), (7, 3085381), (13, 1661359), (17, 1270451), (23, 939029), (91, 237337), (119, 181493), (161, 134147), (221, 97727), (299, 72233), (391, 55237), (607, 35581), (1547, 13961), (2093, 10319), (2737, 7891), (4249, 5083)]