1090000

素因数分解:

$2^4\times 5^4\times {\mathrm{109}}^1$

素因数の和:137

約数の個数: 50

約数和(自身を含む): 2663210

約数和(自身を除く): 1573210

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 109, 125, 200, 218, 250, 400, 436, 500, 545, 625, 872, 1000, 1090, 1250, 1744, 2000, 2180, 2500, 2725, 4360, 5000, 5450, 8720, 10000, 10900, 13625, 21800, 27250, 43600, 54500, 68125, 109000, 136250, 218000, 272500, 545000, 1090000]

約数ペア:

[(1, 1090000), (2, 545000), (4, 272500), (5, 218000), (8, 136250), (10, 109000), (16, 68125), (20, 54500), (25, 43600), (40, 27250), (50, 21800), (80, 13625), (100, 10900), (109, 10000), (125, 8720), (200, 5450), (218, 5000), (250, 4360), (400, 2725), (436, 2500), (500, 2180), (545, 2000), (625, 1744), (872, 1250), (1000, 1090)]