20996108

素因数分解:

$2^2\times 7^2\times {\mathrm{107123}}^1$

素因数の和:107141

約数の個数: 18

約数和(自身を含む): 42742476

約数和(自身を除く): 21746368

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 107123, 214246, 428492, 749861, 1499722, 2999444, 5249027, 10498054, 20996108]

約数ペア:

[(1, 20996108), (2, 10498054), (4, 5249027), (7, 2999444), (14, 1499722), (28, 749861), (49, 428492), (98, 214246), (196, 107123)]