19623920

素因数分解:

$2^4\times 5^1\times {\mathrm{245299}}^1$

素因数の和:245312

約数の個数: 20

約数和(自身を含む): 45625800

約数和(自身を除く): 26001880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 245299, 490598, 981196, 1226495, 1962392, 2452990, 3924784, 4905980, 9811960, 19623920]

約数ペア:

[(1, 19623920), (2, 9811960), (4, 4905980), (5, 3924784), (8, 2452990), (10, 1962392), (16, 1226495), (20, 981196), (40, 490598), (80, 245299)]