20900607

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{10937}}^1$

素因数の和:10967

約数の個数: 24

約数和(自身を含む): 34914096

約数和(自身を除く): 14013489

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911, 10937, 32811, 76559, 142181, 229677, 426543, 535913, 995267, 1607739, 2985801, 6966869, 20900607]

約数ペア:

[(1, 20900607), (3, 6966869), (7, 2985801), (13, 1607739), (21, 995267), (39, 535913), (49, 426543), (91, 229677), (147, 142181), (273, 76559), (637, 32811), (1911, 10937)]