21701584

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{31543}}^1$

素因数の和:31594

約数の個数: 20

約数和(自身を含む): 43026016

約数和(自身を除く): 21324432

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 31543, 63086, 126172, 252344, 504688, 1356349, 2712698, 5425396, 10850792, 21701584]

約数ペア:

[(1, 21701584), (2, 10850792), (4, 5425396), (8, 2712698), (16, 1356349), (43, 504688), (86, 252344), (172, 126172), (344, 63086), (688, 31543)]