19911400

素因数分解:

$2^3\times 5^2\times {\mathrm{29}}^1\times {\mathrm{3433}}^1$

素因数の和:3478

約数の個数: 48

約数和(自身を含む): 47904300

約数和(自身を除く): 27992900

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 29, 40, 50, 58, 100, 116, 145, 200, 232, 290, 580, 725, 1160, 1450, 2900, 3433, 5800, 6866, 13732, 17165, 27464, 34330, 68660, 85825, 99557, 137320, 171650, 199114, 343300, 398228, 497785, 686600, 796456, 995570, 1991140, 2488925, 3982280, 4977850, 9955700, 19911400]

約数ペア:

[(1, 19911400), (2, 9955700), (4, 4977850), (5, 3982280), (8, 2488925), (10, 1991140), (20, 995570), (25, 796456), (29, 686600), (40, 497785), (50, 398228), (58, 343300), (100, 199114), (116, 171650), (145, 137320), (200, 99557), (232, 85825), (290, 68660), (580, 34330), (725, 27464), (1160, 17165), (1450, 13732), (2900, 6866), (3433, 5800)]