21007966

素因数分解:

$2^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{4561}}^1$

素因数の和:4624

約数の個数: 24

約数和(自身を含む): 37444896

約数和(自身を除く): 16436930

約数列:

[1, 2, 7, 14, 47, 49, 94, 98, 329, 658, 2303, 4561, 4606, 9122, 31927, 63854, 214367, 223489, 428734, 446978, 1500569, 3001138, 10503983, 21007966]

約数ペア:

[(1, 21007966), (2, 10503983), (7, 3001138), (14, 1500569), (47, 446978), (49, 428734), (94, 223489), (98, 214367), (329, 63854), (658, 31927), (2303, 9122), (4561, 4606)]