12428800

素因数分解:

$2^9\times 5^2\times {\mathrm{971}}^1$

素因数の和:999

約数の個数: 60

約数和(自身を含む): 30825036

約数和(自身を除く): 18396236

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 512, 640, 800, 971, 1280, 1600, 1942, 2560, 3200, 3884, 4855, 6400, 7768, 9710, 12800, 15536, 19420, 24275, 31072, 38840, 48550, 62144, 77680, 97100, 124288, 155360, 194200, 248576, 310720, 388400, 497152, 621440, 776800, 1242880, 1553600, 2485760, 3107200, 6214400, 12428800]

約数ペア:

[(1, 12428800), (2, 6214400), (4, 3107200), (5, 2485760), (8, 1553600), (10, 1242880), (16, 776800), (20, 621440), (25, 497152), (32, 388400), (40, 310720), (50, 248576), (64, 194200), (80, 155360), (100, 124288), (128, 97100), (160, 77680), (200, 62144), (256, 48550), (320, 38840), (400, 31072), (512, 24275), (640, 19420), (800, 15536), (971, 12800), (1280, 9710), (1600, 7768), (1942, 6400), (2560, 4855), (3200, 3884)]