20698503

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{1567}}^1$

素因数の和:1631

約数の個数: 32

約数和(自身を含む): 34320384

約数和(自身を除く): 13621881

約数列:

[1, 3, 7, 17, 21, 37, 51, 111, 119, 259, 357, 629, 777, 1567, 1887, 4403, 4701, 10969, 13209, 26639, 32907, 57979, 79917, 173937, 186473, 405853, 559419, 985643, 1217559, 2956929, 6899501, 20698503]

約数ペア:

[(1, 20698503), (3, 6899501), (7, 2956929), (17, 1217559), (21, 985643), (37, 559419), (51, 405853), (111, 186473), (119, 173937), (259, 79917), (357, 57979), (629, 32907), (777, 26639), (1567, 13209), (1887, 10969), (4403, 4701)]