257656720

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{337}}^1\times {\mathrm{503}}^1$

素因数の和:872

約数の個数: 80

約数和(自身を含む): 633709440

約数和(自身を除く): 376052720

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 337, 380, 503, 674, 760, 1006, 1348, 1520, 1685, 2012, 2515, 2696, 3370, 4024, 5030, 5392, 6403, 6740, 8048, 9557, 10060, 12806, 13480, 19114, 20120, 25612, 26960, 32015, 38228, 40240, 47785, 51224, 64030, 76456, 95570, 102448, 128060, 152912, 169511, 191140, 256120, 339022, 382280, 512240, 678044, 764560, 847555, 1356088, 1695110, 2712176, 3220709, 3390220, 6441418, 6780440, 12882836, 13560880, 16103545, 25765672, 32207090, 51531344, 64414180, 128828360, 257656720]

約数ペア:

[(1, 257656720), (2, 128828360), (4, 64414180), (5, 51531344), (8, 32207090), (10, 25765672), (16, 16103545), (19, 13560880), (20, 12882836), (38, 6780440), (40, 6441418), (76, 3390220), (80, 3220709), (95, 2712176), (152, 1695110), (190, 1356088), (304, 847555), (337, 764560), (380, 678044), (503, 512240), (674, 382280), (760, 339022), (1006, 256120), (1348, 191140), (1520, 169511), (1685, 152912), (2012, 128060), (2515, 102448), (2696, 95570), (3370, 76456), (4024, 64030), (5030, 51224), (5392, 47785), (6403, 40240), (6740, 38228), (8048, 32015), (9557, 26960), (10060, 25612), (12806, 20120), (13480, 19114)]