19811800

素因数分解:

$2^3\times 5^2\times {\mathrm{17}}^1\times {\mathrm{5827}}^1$

素因数の和:5860

約数の個数: 48

約数和(自身を含む): 48780360

約数和(自身を除く): 28968560

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 25, 34, 40, 50, 68, 85, 100, 136, 170, 200, 340, 425, 680, 850, 1700, 3400, 5827, 11654, 23308, 29135, 46616, 58270, 99059, 116540, 145675, 198118, 233080, 291350, 396236, 495295, 582700, 792472, 990590, 1165400, 1981180, 2476475, 3962360, 4952950, 9905900, 19811800]

約数ペア:

[(1, 19811800), (2, 9905900), (4, 4952950), (5, 3962360), (8, 2476475), (10, 1981180), (17, 1165400), (20, 990590), (25, 792472), (34, 582700), (40, 495295), (50, 396236), (68, 291350), (85, 233080), (100, 198118), (136, 145675), (170, 116540), (200, 99059), (340, 58270), (425, 46616), (680, 29135), (850, 23308), (1700, 11654), (3400, 5827)]