81406640

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{1093}}^1$

素因数の和:1139

約数の個数: 120

約数和(自身を含む): 231971760

約数和(自身を除く): 150565120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 28, 35, 38, 40, 49, 56, 70, 76, 80, 95, 98, 112, 133, 140, 152, 190, 196, 245, 266, 280, 304, 380, 392, 490, 532, 560, 665, 760, 784, 931, 980, 1064, 1093, 1330, 1520, 1862, 1960, 2128, 2186, 2660, 3724, 3920, 4372, 4655, 5320, 5465, 7448, 7651, 8744, 9310, 10640, 10930, 14896, 15302, 17488, 18620, 20767, 21860, 30604, 37240, 38255, 41534, 43720, 53557, 61208, 74480, 76510, 83068, 87440, 103835, 107114, 122416, 145369, 153020, 166136, 207670, 214228, 267785, 290738, 306040, 332272, 415340, 428456, 535570, 581476, 612080, 726845, 830680, 856912, 1017583, 1071140, 1162952, 1453690, 1661360, 2035166, 2142280, 2325904, 2907380, 4070332, 4284560, 5087915, 5814760, 8140664, 10175830, 11629520, 16281328, 20351660, 40703320, 81406640]

約数ペア:

[(1, 81406640), (2, 40703320), (4, 20351660), (5, 16281328), (7, 11629520), (8, 10175830), (10, 8140664), (14, 5814760), (16, 5087915), (19, 4284560), (20, 4070332), (28, 2907380), (35, 2325904), (38, 2142280), (40, 2035166), (49, 1661360), (56, 1453690), (70, 1162952), (76, 1071140), (80, 1017583), (95, 856912), (98, 830680), (112, 726845), (133, 612080), (140, 581476), (152, 535570), (190, 428456), (196, 415340), (245, 332272), (266, 306040), (280, 290738), (304, 267785), (380, 214228), (392, 207670), (490, 166136), (532, 153020), (560, 145369), (665, 122416), (760, 107114), (784, 103835), (931, 87440), (980, 83068), (1064, 76510), (1093, 74480), (1330, 61208), (1520, 53557), (1862, 43720), (1960, 41534), (2128, 38255), (2186, 37240), (2660, 30604), (3724, 21860), (3920, 20767), (4372, 18620), (4655, 17488), (5320, 15302), (5465, 14896), (7448, 10930), (7651, 10640), (8744, 9310)]