19978959

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{6653}}^1$

素因数の和:6687

約数の個数: 32

約数和(自身を含む): 35771904

約数和(自身を除く): 15792945

約数列:

[1, 3, 7, 11, 13, 21, 33, 39, 77, 91, 143, 231, 273, 429, 1001, 3003, 6653, 19959, 46571, 73183, 86489, 139713, 219549, 259467, 512281, 605423, 951379, 1536843, 1816269, 2854137, 6659653, 19978959]

約数ペア:

[(1, 19978959), (3, 6659653), (7, 2854137), (11, 1816269), (13, 1536843), (21, 951379), (33, 605423), (39, 512281), (77, 259467), (91, 219549), (143, 139713), (231, 86489), (273, 73183), (429, 46571), (1001, 19959), (3003, 6653)]