21124000

素因数分解:

$2^5\times 5^3\times {\mathrm{5281}}^1$

素因数の和:5306

約数の個数: 48

約数和(自身を含む): 51911496

約数和(自身を除く): 30787496

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, 5281, 10562, 21124, 26405, 42248, 52810, 84496, 105620, 132025, 168992, 211240, 264050, 422480, 528100, 660125, 844960, 1056200, 1320250, 2112400, 2640500, 4224800, 5281000, 10562000, 21124000]

約数ペア:

[(1, 21124000), (2, 10562000), (4, 5281000), (5, 4224800), (8, 2640500), (10, 2112400), (16, 1320250), (20, 1056200), (25, 844960), (32, 660125), (40, 528100), (50, 422480), (80, 264050), (100, 211240), (125, 168992), (160, 132025), (200, 105620), (250, 84496), (400, 52810), (500, 42248), (800, 26405), (1000, 21124), (2000, 10562), (4000, 5281)]