21278364

素因数分解:

$2^2\times 3^1\times {\mathrm{197}}^1\times {\mathrm{9001}}^1$

素因数の和:9205

約数の個数: 24

約数和(自身を含む): 49907088

約数和(自身を除く): 28628724

約数列:

[1, 2, 3, 4, 6, 12, 197, 394, 591, 788, 1182, 2364, 9001, 18002, 27003, 36004, 54006, 108012, 1773197, 3546394, 5319591, 7092788, 10639182, 21278364]

約数ペア:

[(1, 21278364), (2, 10639182), (3, 7092788), (4, 5319591), (6, 3546394), (12, 1773197), (197, 108012), (394, 54006), (591, 36004), (788, 27003), (1182, 18002), (2364, 9001)]