254963840

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{181}}^1$

素因数の和:302

約数の個数: 128

約数和(自身を含む): 641571840

約数和(自身を除く): 386608000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 71, 80, 124, 128, 142, 155, 160, 181, 248, 284, 310, 320, 355, 362, 496, 568, 620, 640, 710, 724, 905, 992, 1136, 1240, 1420, 1448, 1810, 1984, 2201, 2272, 2480, 2840, 2896, 3620, 3968, 4402, 4544, 4960, 5611, 5680, 5792, 7240, 8804, 9088, 9920, 11005, 11222, 11360, 11584, 12851, 14480, 17608, 19840, 22010, 22444, 22720, 23168, 25702, 28055, 28960, 35216, 44020, 44888, 45440, 51404, 56110, 57920, 64255, 70432, 88040, 89776, 102808, 112220, 115840, 128510, 140864, 176080, 179552, 205616, 224440, 257020, 281728, 352160, 359104, 398381, 411232, 448880, 514040, 704320, 718208, 796762, 822464, 897760, 1028080, 1408640, 1593524, 1644928, 1795520, 1991905, 2056160, 3187048, 3591040, 3983810, 4112320, 6374096, 7967620, 8224640, 12748192, 15935240, 25496384, 31870480, 50992768, 63740960, 127481920, 254963840]

約数ペア:

[(1, 254963840), (2, 127481920), (4, 63740960), (5, 50992768), (8, 31870480), (10, 25496384), (16, 15935240), (20, 12748192), (31, 8224640), (32, 7967620), (40, 6374096), (62, 4112320), (64, 3983810), (71, 3591040), (80, 3187048), (124, 2056160), (128, 1991905), (142, 1795520), (155, 1644928), (160, 1593524), (181, 1408640), (248, 1028080), (284, 897760), (310, 822464), (320, 796762), (355, 718208), (362, 704320), (496, 514040), (568, 448880), (620, 411232), (640, 398381), (710, 359104), (724, 352160), (905, 281728), (992, 257020), (1136, 224440), (1240, 205616), (1420, 179552), (1448, 176080), (1810, 140864), (1984, 128510), (2201, 115840), (2272, 112220), (2480, 102808), (2840, 89776), (2896, 88040), (3620, 70432), (3968, 64255), (4402, 57920), (4544, 56110), (4960, 51404), (5611, 45440), (5680, 44888), (5792, 44020), (7240, 35216), (8804, 28960), (9088, 28055), (9920, 25702), (11005, 23168), (11222, 22720), (11360, 22444), (11584, 22010), (12851, 19840), (14480, 17608)]