19458220

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{4889}}^1$

素因数の和:5097

約数の個数: 24

約数和(自身を含む): 41076000

約数和(自身を除く): 21617780

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 3980, 4889, 9778, 19556, 24445, 48890, 97780, 972911, 1945822, 3891644, 4864555, 9729110, 19458220]

約数ペア:

[(1, 19458220), (2, 9729110), (4, 4864555), (5, 3891644), (10, 1945822), (20, 972911), (199, 97780), (398, 48890), (796, 24445), (995, 19556), (1990, 9778), (3980, 4889)]