21188000

素因数分解:

$2^5\times 5^3\times {\mathrm{5297}}^1$

素因数の和:5322

約数の個数: 48

約数和(自身を含む): 52068744

約数和(自身を除く): 30880744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 800, 1000, 2000, 4000, 5297, 10594, 21188, 26485, 42376, 52970, 84752, 105940, 132425, 169504, 211880, 264850, 423760, 529700, 662125, 847520, 1059400, 1324250, 2118800, 2648500, 4237600, 5297000, 10594000, 21188000]

約数ペア:

[(1, 21188000), (2, 10594000), (4, 5297000), (5, 4237600), (8, 2648500), (10, 2118800), (16, 1324250), (20, 1059400), (25, 847520), (32, 662125), (40, 529700), (50, 423760), (80, 264850), (100, 211880), (125, 169504), (160, 132425), (200, 105940), (250, 84752), (400, 52970), (500, 42376), (800, 26485), (1000, 21188), (2000, 10594), (4000, 5297)]