987201280

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1447}}^1$

素因数の和:1522

約数の個数: 144

約数和(自身を含む): 2610465984

約数和(自身を除く): 1623264704

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 41, 52, 64, 65, 80, 82, 104, 128, 130, 160, 164, 205, 208, 256, 260, 320, 328, 410, 416, 520, 533, 640, 656, 820, 832, 1040, 1066, 1280, 1312, 1447, 1640, 1664, 2080, 2132, 2624, 2665, 2894, 3280, 3328, 4160, 4264, 5248, 5330, 5788, 6560, 7235, 8320, 8528, 10496, 10660, 11576, 13120, 14470, 16640, 17056, 18811, 21320, 23152, 26240, 28940, 34112, 37622, 42640, 46304, 52480, 57880, 59327, 68224, 75244, 85280, 92608, 94055, 115760, 118654, 136448, 150488, 170560, 185216, 188110, 231520, 237308, 296635, 300976, 341120, 370432, 376220, 463040, 474616, 593270, 601952, 682240, 752440, 771251, 926080, 949232, 1186540, 1203904, 1504880, 1542502, 1852160, 1898464, 2373080, 2407808, 3009760, 3085004, 3796928, 3856255, 4746160, 4815616, 6019520, 6170008, 7593856, 7712510, 9492320, 12039040, 12340016, 15187712, 15425020, 18984640, 24078080, 24680032, 30850040, 37969280, 49360064, 61700080, 75938560, 98720128, 123400160, 197440256, 246800320, 493600640, 987201280]

約数ペア:

[(1, 987201280), (2, 493600640), (4, 246800320), (5, 197440256), (8, 123400160), (10, 98720128), (13, 75938560), (16, 61700080), (20, 49360064), (26, 37969280), (32, 30850040), (40, 24680032), (41, 24078080), (52, 18984640), (64, 15425020), (65, 15187712), (80, 12340016), (82, 12039040), (104, 9492320), (128, 7712510), (130, 7593856), (160, 6170008), (164, 6019520), (205, 4815616), (208, 4746160), (256, 3856255), (260, 3796928), (320, 3085004), (328, 3009760), (410, 2407808), (416, 2373080), (520, 1898464), (533, 1852160), (640, 1542502), (656, 1504880), (820, 1203904), (832, 1186540), (1040, 949232), (1066, 926080), (1280, 771251), (1312, 752440), (1447, 682240), (1640, 601952), (1664, 593270), (2080, 474616), (2132, 463040), (2624, 376220), (2665, 370432), (2894, 341120), (3280, 300976), (3328, 296635), (4160, 237308), (4264, 231520), (5248, 188110), (5330, 185216), (5788, 170560), (6560, 150488), (7235, 136448), (8320, 118654), (8528, 115760), (10496, 94055), (10660, 92608), (11576, 85280), (13120, 75244), (14470, 68224), (16640, 59327), (17056, 57880), (18811, 52480), (21320, 46304), (23152, 42640), (26240, 37622), (28940, 34112)]