19210640

素因数分解:

$2^4\times 5^1\times {\mathrm{439}}^1\times {\mathrm{547}}^1$

素因数の和:999

約数の個数: 40

約数和(自身を含む): 44848320

約数和(自身を除く): 25637680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 439, 547, 878, 1094, 1756, 2188, 2195, 2735, 3512, 4376, 4390, 5470, 7024, 8752, 8780, 10940, 17560, 21880, 35120, 43760, 240133, 480266, 960532, 1200665, 1921064, 2401330, 3842128, 4802660, 9605320, 19210640]

約数ペア:

[(1, 19210640), (2, 9605320), (4, 4802660), (5, 3842128), (8, 2401330), (10, 1921064), (16, 1200665), (20, 960532), (40, 480266), (80, 240133), (439, 43760), (547, 35120), (878, 21880), (1094, 17560), (1756, 10940), (2188, 8780), (2195, 8752), (2735, 7024), (3512, 5470), (4376, 4390)]