208903040

素因数分解:

$2^7\times 5^1\times {\mathrm{61}}^1\times {\mathrm{5351}}^1$

素因数の和:5431

約数の個数: 64

約数和(自身を含む): 507690720

約数和(自身を除く): 298787680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 128, 160, 244, 305, 320, 488, 610, 640, 976, 1220, 1952, 2440, 3904, 4880, 5351, 7808, 9760, 10702, 19520, 21404, 26755, 39040, 42808, 53510, 85616, 107020, 171232, 214040, 326411, 342464, 428080, 652822, 684928, 856160, 1305644, 1632055, 1712320, 2611288, 3264110, 3424640, 5222576, 6528220, 10445152, 13056440, 20890304, 26112880, 41780608, 52225760, 104451520, 208903040]

約数ペア:

[(1, 208903040), (2, 104451520), (4, 52225760), (5, 41780608), (8, 26112880), (10, 20890304), (16, 13056440), (20, 10445152), (32, 6528220), (40, 5222576), (61, 3424640), (64, 3264110), (80, 2611288), (122, 1712320), (128, 1632055), (160, 1305644), (244, 856160), (305, 684928), (320, 652822), (488, 428080), (610, 342464), (640, 326411), (976, 214040), (1220, 171232), (1952, 107020), (2440, 85616), (3904, 53510), (4880, 42808), (5351, 39040), (7808, 26755), (9760, 21404), (10702, 19520)]