21243656

素因数分解:

$2^3\times 7^2\times {\mathrm{54193}}^1$

素因数の和:54213

約数の個数: 24

約数和(自身を含む): 46335870

約数和(自身を除く): 25092214

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 392, 54193, 108386, 216772, 379351, 433544, 758702, 1517404, 2655457, 3034808, 5310914, 10621828, 21243656]

約数ペア:

[(1, 21243656), (2, 10621828), (4, 5310914), (7, 3034808), (8, 2655457), (14, 1517404), (28, 758702), (49, 433544), (56, 379351), (98, 216772), (196, 108386), (392, 54193)]