19464880

素因数分解:

$2^4\times 5^1\times {\mathrm{243311}}^1$

素因数の和:243324

約数の個数: 20

約数和(自身を含む): 45256032

約数和(自身を除く): 25791152

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 243311, 486622, 973244, 1216555, 1946488, 2433110, 3892976, 4866220, 9732440, 19464880]

約数ペア:

[(1, 19464880), (2, 9732440), (4, 4866220), (5, 3892976), (8, 2433110), (10, 1946488), (16, 1216555), (20, 973244), (40, 486622), (80, 243311)]