20191899

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1999}}^1$

素因数の和:2059

約数の個数: 32

約数和(自身を含む): 34048000

約数和(自身を除く): 13856101

約数列:

[1, 3, 7, 13, 21, 37, 39, 91, 111, 259, 273, 481, 777, 1443, 1999, 3367, 5997, 10101, 13993, 25987, 41979, 73963, 77961, 181909, 221889, 517741, 545727, 961519, 1553223, 2884557, 6730633, 20191899]

約数ペア:

[(1, 20191899), (3, 6730633), (7, 2884557), (13, 1553223), (21, 961519), (37, 545727), (39, 517741), (91, 221889), (111, 181909), (259, 77961), (273, 73963), (481, 41979), (777, 25987), (1443, 13993), (1999, 10101), (3367, 5997)]