665040640

素因数分解:

$2^8\times 5^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{317}}^1$

素因数の和:498

約数の個数: 144

約数和(自身を含む): 1754978400

約数和(自身を除く): 1089937760

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 149, 160, 176, 220, 256, 298, 317, 320, 352, 440, 596, 634, 640, 704, 745, 880, 1192, 1268, 1280, 1408, 1490, 1585, 1639, 1760, 2384, 2536, 2816, 2980, 3170, 3278, 3487, 3520, 4768, 5072, 5960, 6340, 6556, 6974, 7040, 8195, 9536, 10144, 11920, 12680, 13112, 13948, 14080, 16390, 17435, 19072, 20288, 23840, 25360, 26224, 27896, 32780, 34870, 38144, 40576, 47233, 47680, 50720, 52448, 55792, 65560, 69740, 81152, 94466, 95360, 101440, 104896, 111584, 131120, 139480, 188932, 190720, 202880, 209792, 223168, 236165, 262240, 278960, 377864, 405760, 419584, 446336, 472330, 519563, 524480, 557920, 755728, 892672, 944660, 1039126, 1048960, 1115840, 1511456, 1889320, 2078252, 2097920, 2231680, 2597815, 3022912, 3778640, 4156504, 4463360, 5195630, 6045824, 7557280, 8313008, 10391260, 12091648, 15114560, 16626016, 20782520, 30229120, 33252032, 41565040, 60458240, 66504064, 83130080, 133008128, 166260160, 332520320, 665040640]

約数ペア:

[(1, 665040640), (2, 332520320), (4, 166260160), (5, 133008128), (8, 83130080), (10, 66504064), (11, 60458240), (16, 41565040), (20, 33252032), (22, 30229120), (32, 20782520), (40, 16626016), (44, 15114560), (55, 12091648), (64, 10391260), (80, 8313008), (88, 7557280), (110, 6045824), (128, 5195630), (149, 4463360), (160, 4156504), (176, 3778640), (220, 3022912), (256, 2597815), (298, 2231680), (317, 2097920), (320, 2078252), (352, 1889320), (440, 1511456), (596, 1115840), (634, 1048960), (640, 1039126), (704, 944660), (745, 892672), (880, 755728), (1192, 557920), (1268, 524480), (1280, 519563), (1408, 472330), (1490, 446336), (1585, 419584), (1639, 405760), (1760, 377864), (2384, 278960), (2536, 262240), (2816, 236165), (2980, 223168), (3170, 209792), (3278, 202880), (3487, 190720), (3520, 188932), (4768, 139480), (5072, 131120), (5960, 111584), (6340, 104896), (6556, 101440), (6974, 95360), (7040, 94466), (8195, 81152), (9536, 69740), (10144, 65560), (11920, 55792), (12680, 52448), (13112, 50720), (13948, 47680), (14080, 47233), (16390, 40576), (17435, 38144), (19072, 34870), (20288, 32780), (23840, 27896), (25360, 26224)]