19482640

素因数分解:

$2^4\times 5^1\times {\mathrm{243533}}^1$

素因数の和:243546

約数の個数: 20

約数和(自身を含む): 45297324

約数和(自身を除く): 25814684

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 243533, 487066, 974132, 1217665, 1948264, 2435330, 3896528, 4870660, 9741320, 19482640]

約数ペア:

[(1, 19482640), (2, 9741320), (4, 4870660), (5, 3896528), (8, 2435330), (10, 1948264), (16, 1217665), (20, 974132), (40, 487066), (80, 243533)]