81817120

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{229}}^1$

素因数の和:291

約数の個数: 192

約数和(自身を含む): 250387200

約数和(自身を除く): 168570080

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 29, 32, 35, 40, 44, 55, 56, 58, 70, 77, 80, 88, 110, 112, 116, 140, 145, 154, 160, 176, 203, 220, 224, 229, 232, 280, 290, 308, 319, 352, 385, 406, 440, 458, 464, 560, 580, 616, 638, 770, 812, 880, 916, 928, 1015, 1120, 1145, 1160, 1232, 1276, 1540, 1595, 1603, 1624, 1760, 1832, 2030, 2233, 2290, 2320, 2464, 2519, 2552, 3080, 3190, 3206, 3248, 3664, 4060, 4466, 4580, 4640, 5038, 5104, 6160, 6380, 6412, 6496, 6641, 7328, 8015, 8120, 8932, 9160, 10076, 10208, 11165, 12320, 12595, 12760, 12824, 13282, 16030, 16240, 17633, 17864, 18320, 20152, 22330, 25190, 25520, 25648, 26564, 32060, 32480, 33205, 35266, 35728, 36640, 40304, 44660, 46487, 50380, 51040, 51296, 53128, 64120, 66410, 70532, 71456, 73051, 80608, 88165, 89320, 92974, 100760, 106256, 128240, 132820, 141064, 146102, 176330, 178640, 185948, 201520, 212512, 232435, 256480, 265640, 282128, 292204, 352660, 357280, 365255, 371896, 403040, 464870, 511357, 531280, 564256, 584408, 705320, 730510, 743792, 929740, 1022714, 1062560, 1168816, 1410640, 1461020, 1487584, 1859480, 2045428, 2337632, 2556785, 2821280, 2922040, 3718960, 4090856, 5113570, 5844080, 7437920, 8181712, 10227140, 11688160, 16363424, 20454280, 40908560, 81817120]

約数ペア:

[(1, 81817120), (2, 40908560), (4, 20454280), (5, 16363424), (7, 11688160), (8, 10227140), (10, 8181712), (11, 7437920), (14, 5844080), (16, 5113570), (20, 4090856), (22, 3718960), (28, 2922040), (29, 2821280), (32, 2556785), (35, 2337632), (40, 2045428), (44, 1859480), (55, 1487584), (56, 1461020), (58, 1410640), (70, 1168816), (77, 1062560), (80, 1022714), (88, 929740), (110, 743792), (112, 730510), (116, 705320), (140, 584408), (145, 564256), (154, 531280), (160, 511357), (176, 464870), (203, 403040), (220, 371896), (224, 365255), (229, 357280), (232, 352660), (280, 292204), (290, 282128), (308, 265640), (319, 256480), (352, 232435), (385, 212512), (406, 201520), (440, 185948), (458, 178640), (464, 176330), (560, 146102), (580, 141064), (616, 132820), (638, 128240), (770, 106256), (812, 100760), (880, 92974), (916, 89320), (928, 88165), (1015, 80608), (1120, 73051), (1145, 71456), (1160, 70532), (1232, 66410), (1276, 64120), (1540, 53128), (1595, 51296), (1603, 51040), (1624, 50380), (1760, 46487), (1832, 44660), (2030, 40304), (2233, 36640), (2290, 35728), (2320, 35266), (2464, 33205), (2519, 32480), (2552, 32060), (3080, 26564), (3190, 25648), (3206, 25520), (3248, 25190), (3664, 22330), (4060, 20152), (4466, 18320), (4580, 17864), (4640, 17633), (5038, 16240), (5104, 16030), (6160, 13282), (6380, 12824), (6412, 12760), (6496, 12595), (6641, 12320), (7328, 11165), (8015, 10208), (8120, 10076), (8932, 9160)]