398738760

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{479}}^1\times {\mathrm{991}}^1$

素因数の和:1491

約数の個数: 128

約数和(自身を含む): 1371340800

約数和(自身を除く): 972602040

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 479, 840, 958, 991, 1437, 1916, 1982, 2395, 2874, 2973, 3353, 3832, 3964, 4790, 4955, 5748, 5946, 6706, 6937, 7185, 7928, 9580, 9910, 10059, 11496, 11892, 13412, 13874, 14370, 14865, 16765, 19160, 19820, 20118, 20811, 23784, 26824, 27748, 28740, 29730, 33530, 34685, 39640, 40236, 41622, 50295, 55496, 57480, 59460, 67060, 69370, 80472, 83244, 100590, 104055, 118920, 134120, 138740, 166488, 201180, 208110, 277480, 402360, 416220, 474689, 832440, 949378, 1424067, 1898756, 2373445, 2848134, 3322823, 3797512, 4746890, 5696268, 6645646, 7120335, 9493780, 9968469, 11392536, 13291292, 14240670, 16614115, 18987560, 19936938, 26582584, 28481340, 33228230, 39873876, 49842345, 56962680, 66456460, 79747752, 99684690, 132912920, 199369380, 398738760]

約数ペア:

[(1, 398738760), (2, 199369380), (3, 132912920), (4, 99684690), (5, 79747752), (6, 66456460), (7, 56962680), (8, 49842345), (10, 39873876), (12, 33228230), (14, 28481340), (15, 26582584), (20, 19936938), (21, 18987560), (24, 16614115), (28, 14240670), (30, 13291292), (35, 11392536), (40, 9968469), (42, 9493780), (56, 7120335), (60, 6645646), (70, 5696268), (84, 4746890), (105, 3797512), (120, 3322823), (140, 2848134), (168, 2373445), (210, 1898756), (280, 1424067), (420, 949378), (479, 832440), (840, 474689), (958, 416220), (991, 402360), (1437, 277480), (1916, 208110), (1982, 201180), (2395, 166488), (2874, 138740), (2973, 134120), (3353, 118920), (3832, 104055), (3964, 100590), (4790, 83244), (4955, 80472), (5748, 69370), (5946, 67060), (6706, 59460), (6937, 57480), (7185, 55496), (7928, 50295), (9580, 41622), (9910, 40236), (10059, 39640), (11496, 34685), (11892, 33530), (13412, 29730), (13874, 28740), (14370, 27748), (14865, 26824), (16765, 23784), (19160, 20811), (19820, 20118)]