9990400

素因数分解:

$2^8\times 5^2\times 7^1\times {\mathrm{223}}^1$

素因数の和:256

約数の個数: 108

約数和(自身を含む): 28387072

約数和(自身を除く): 18396672

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 50, 56, 64, 70, 80, 100, 112, 128, 140, 160, 175, 200, 223, 224, 256, 280, 320, 350, 400, 446, 448, 560, 640, 700, 800, 892, 896, 1115, 1120, 1280, 1400, 1561, 1600, 1784, 1792, 2230, 2240, 2800, 3122, 3200, 3568, 4460, 4480, 5575, 5600, 6244, 6400, 7136, 7805, 8920, 8960, 11150, 11200, 12488, 14272, 15610, 17840, 22300, 22400, 24976, 28544, 31220, 35680, 39025, 44600, 44800, 49952, 57088, 62440, 71360, 78050, 89200, 99904, 124880, 142720, 156100, 178400, 199808, 249760, 285440, 312200, 356800, 399616, 499520, 624400, 713600, 999040, 1248800, 1427200, 1998080, 2497600, 4995200, 9990400]

約数ペア:

[(1, 9990400), (2, 4995200), (4, 2497600), (5, 1998080), (7, 1427200), (8, 1248800), (10, 999040), (14, 713600), (16, 624400), (20, 499520), (25, 399616), (28, 356800), (32, 312200), (35, 285440), (40, 249760), (50, 199808), (56, 178400), (64, 156100), (70, 142720), (80, 124880), (100, 99904), (112, 89200), (128, 78050), (140, 71360), (160, 62440), (175, 57088), (200, 49952), (223, 44800), (224, 44600), (256, 39025), (280, 35680), (320, 31220), (350, 28544), (400, 24976), (446, 22400), (448, 22300), (560, 17840), (640, 15610), (700, 14272), (800, 12488), (892, 11200), (896, 11150), (1115, 8960), (1120, 8920), (1280, 7805), (1400, 7136), (1561, 6400), (1600, 6244), (1784, 5600), (1792, 5575), (2230, 4480), (2240, 4460), (2800, 3568), (3122, 3200)]