20982717

素因数分解:

$3^2\times 7^1\times {\mathrm{271}}^1\times {\mathrm{1229}}^1$

素因数の和:1513

約数の個数: 24

約数和(自身を含む): 34794240

約数和(自身を除く): 13811523

約数列:

[1, 3, 7, 9, 21, 63, 271, 813, 1229, 1897, 2439, 3687, 5691, 8603, 11061, 17073, 25809, 77427, 333059, 999177, 2331413, 2997531, 6994239, 20982717]

約数ペア:

[(1, 20982717), (3, 6994239), (7, 2997531), (9, 2331413), (21, 999177), (63, 333059), (271, 77427), (813, 25809), (1229, 17073), (1897, 11061), (2439, 8603), (3687, 5691)]