21276496

素因数分解:

$2^4\times {\mathrm{131}}^1\times {\mathrm{10151}}^1$

素因数の和:10290

約数の個数: 20

約数和(自身を含む): 41541984

約数和(自身を除く): 20265488

約数列:

[1, 2, 4, 8, 16, 131, 262, 524, 1048, 2096, 10151, 20302, 40604, 81208, 162416, 1329781, 2659562, 5319124, 10638248, 21276496]

約数ペア:

[(1, 21276496), (2, 10638248), (4, 5319124), (8, 2659562), (16, 1329781), (131, 162416), (262, 81208), (524, 40604), (1048, 20302), (2096, 10151)]