20381691

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{773}}^1$

素因数の和:851

約数の個数: 32

約数和(自身を含む): 32099328

約数和(自身を除く): 11717637

約数列:

[1, 3, 11, 17, 33, 47, 51, 141, 187, 517, 561, 773, 799, 1551, 2319, 2397, 8503, 8789, 13141, 25509, 26367, 36331, 39423, 108993, 144551, 399641, 433653, 617627, 1198923, 1852881, 6793897, 20381691]

約数ペア:

[(1, 20381691), (3, 6793897), (11, 1852881), (17, 1198923), (33, 617627), (47, 433653), (51, 399641), (141, 144551), (187, 108993), (517, 39423), (561, 36331), (773, 26367), (799, 25509), (1551, 13141), (2319, 8789), (2397, 8503)]