81920640

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{42667}}^1$

素因数の和:42689

約数の個数: 64

約数和(自身を含む): 261128160

約数和(自身を除く): 179207520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 320, 384, 480, 640, 960, 1920, 42667, 85334, 128001, 170668, 213335, 256002, 341336, 426670, 512004, 640005, 682672, 853340, 1024008, 1280010, 1365344, 1706680, 2048016, 2560020, 2730688, 3413360, 4096032, 5120040, 5461376, 6826720, 8192064, 10240080, 13653440, 16384128, 20480160, 27306880, 40960320, 81920640]

約数ペア:

[(1, 81920640), (2, 40960320), (3, 27306880), (4, 20480160), (5, 16384128), (6, 13653440), (8, 10240080), (10, 8192064), (12, 6826720), (15, 5461376), (16, 5120040), (20, 4096032), (24, 3413360), (30, 2730688), (32, 2560020), (40, 2048016), (48, 1706680), (60, 1365344), (64, 1280010), (80, 1024008), (96, 853340), (120, 682672), (128, 640005), (160, 512004), (192, 426670), (240, 341336), (320, 256002), (384, 213335), (480, 170668), (640, 128001), (960, 85334), (1920, 42667)]