21028868

素因数分解:

$2^2\times 7^1\times {\mathrm{547}}^1\times {\mathrm{1373}}^1$

素因数の和:1931

約数の個数: 24

約数和(自身を含む): 42165312

約数和(自身を除く): 21136444

約数列:

[1, 2, 4, 7, 14, 28, 547, 1094, 1373, 2188, 2746, 3829, 5492, 7658, 9611, 15316, 19222, 38444, 751031, 1502062, 3004124, 5257217, 10514434, 21028868]

約数ペア:

[(1, 21028868), (2, 10514434), (4, 5257217), (7, 3004124), (14, 1502062), (28, 751031), (547, 38444), (1094, 19222), (1373, 15316), (2188, 9611), (2746, 7658), (3829, 5492)]