20962071

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1171}}^1$

素因数の和:1213

約数の個数: 40

約数和(自身を含む): 35736624

約数和(自身を除く): 14774553

約数列:

[1, 3, 9, 13, 17, 27, 39, 51, 81, 117, 153, 221, 351, 459, 663, 1053, 1171, 1377, 1989, 3513, 5967, 10539, 15223, 17901, 19907, 31617, 45669, 59721, 94851, 137007, 179163, 258791, 411021, 537489, 776373, 1233063, 1612467, 2329119, 6987357, 20962071]

約数ペア:

[(1, 20962071), (3, 6987357), (9, 2329119), (13, 1612467), (17, 1233063), (27, 776373), (39, 537489), (51, 411021), (81, 258791), (117, 179163), (153, 137007), (221, 94851), (351, 59721), (459, 45669), (663, 31617), (1053, 19907), (1171, 17901), (1377, 15223), (1989, 10539), (3513, 5967)]