990500

素因数分解:

$2^2\times 5^3\times 7^1\times {\mathrm{283}}^1$

素因数の和:309

約数の個数: 48

約数和(自身を含む): 2481024

約数和(自身を除く): 1490524

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 125, 140, 175, 250, 283, 350, 500, 566, 700, 875, 1132, 1415, 1750, 1981, 2830, 3500, 3962, 5660, 7075, 7924, 9905, 14150, 19810, 28300, 35375, 39620, 49525, 70750, 99050, 141500, 198100, 247625, 495250, 990500]

約数ペア:

[(1, 990500), (2, 495250), (4, 247625), (5, 198100), (7, 141500), (10, 99050), (14, 70750), (20, 49525), (25, 39620), (28, 35375), (35, 28300), (50, 19810), (70, 14150), (100, 9905), (125, 7924), (140, 7075), (175, 5660), (250, 3962), (283, 3500), (350, 2830), (500, 1981), (566, 1750), (700, 1415), (875, 1132)]