21700208

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{31541}}^1$

素因数の和:31592

約数の個数: 20

約数和(自身を含む): 43023288

約数和(自身を除く): 21323080

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 31541, 63082, 126164, 252328, 504656, 1356263, 2712526, 5425052, 10850104, 21700208]

約数ペア:

[(1, 21700208), (2, 10850104), (4, 5425052), (8, 2712526), (16, 1356263), (43, 504656), (86, 252328), (172, 126164), (344, 63082), (688, 31541)]