20257916

素因数分解:

$2^2\times 7^1\times {\mathrm{137}}^1\times {\mathrm{5281}}^1$

素因数の和:5429

約数の個数: 24

約数和(自身を含む): 40819296

約数和(自身を除く): 20561380

約数列:

[1, 2, 4, 7, 14, 28, 137, 274, 548, 959, 1918, 3836, 5281, 10562, 21124, 36967, 73934, 147868, 723497, 1446994, 2893988, 5064479, 10128958, 20257916]

約数ペア:

[(1, 20257916), (2, 10128958), (4, 5064479), (7, 2893988), (14, 1446994), (28, 723497), (137, 147868), (274, 73934), (548, 36967), (959, 21124), (1918, 10562), (3836, 5281)]