21272000

素因数分解:

$2^6\times 5^3\times {\mathrm{2659}}^1$

素因数の和:2686

約数の個数: 56

約数和(自身を含む): 52699920

約数和(自身を除く): 31427920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 160, 200, 250, 320, 400, 500, 800, 1000, 1600, 2000, 2659, 4000, 5318, 8000, 10636, 13295, 21272, 26590, 42544, 53180, 66475, 85088, 106360, 132950, 170176, 212720, 265900, 332375, 425440, 531800, 664750, 850880, 1063600, 1329500, 2127200, 2659000, 4254400, 5318000, 10636000, 21272000]

約数ペア:

[(1, 21272000), (2, 10636000), (4, 5318000), (5, 4254400), (8, 2659000), (10, 2127200), (16, 1329500), (20, 1063600), (25, 850880), (32, 664750), (40, 531800), (50, 425440), (64, 332375), (80, 265900), (100, 212720), (125, 170176), (160, 132950), (200, 106360), (250, 85088), (320, 66475), (400, 53180), (500, 42544), (800, 26590), (1000, 21272), (1600, 13295), (2000, 10636), (2659, 8000), (4000, 5318)]