1991800

素因数分解:

$2^3\times 5^2\times {\mathrm{23}}^1\times {\mathrm{433}}^1$

素因数の和:472

約数の個数: 48

約数和(自身を含む): 4843440

約数和(自身を除く): 2851640

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 25, 40, 46, 50, 92, 100, 115, 184, 200, 230, 433, 460, 575, 866, 920, 1150, 1732, 2165, 2300, 3464, 4330, 4600, 8660, 9959, 10825, 17320, 19918, 21650, 39836, 43300, 49795, 79672, 86600, 99590, 199180, 248975, 398360, 497950, 995900, 1991800]

約数ペア:

[(1, 1991800), (2, 995900), (4, 497950), (5, 398360), (8, 248975), (10, 199180), (20, 99590), (23, 86600), (25, 79672), (40, 49795), (46, 43300), (50, 39836), (92, 21650), (100, 19918), (115, 17320), (184, 10825), (200, 9959), (230, 8660), (433, 4600), (460, 4330), (575, 3464), (866, 2300), (920, 2165), (1150, 1732)]