251268290

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{3889}}^1$

素因数の和:3987

約数の個数: 64

約数和(自身を含む): 564641280

約数和(自身を除く): 313372990

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 71, 91, 130, 142, 182, 355, 455, 497, 710, 910, 923, 994, 1846, 2485, 3889, 4615, 4970, 6461, 7778, 9230, 12922, 19445, 27223, 32305, 38890, 50557, 54446, 64610, 101114, 136115, 252785, 272230, 276119, 353899, 505570, 552238, 707798, 1380595, 1769495, 1932833, 2761190, 3538990, 3589547, 3865666, 7179094, 9664165, 17947735, 19328330, 25126829, 35895470, 50253658, 125634145, 251268290]

約数ペア:

[(1, 251268290), (2, 125634145), (5, 50253658), (7, 35895470), (10, 25126829), (13, 19328330), (14, 17947735), (26, 9664165), (35, 7179094), (65, 3865666), (70, 3589547), (71, 3538990), (91, 2761190), (130, 1932833), (142, 1769495), (182, 1380595), (355, 707798), (455, 552238), (497, 505570), (710, 353899), (910, 276119), (923, 272230), (994, 252785), (1846, 136115), (2485, 101114), (3889, 64610), (4615, 54446), (4970, 50557), (6461, 38890), (7778, 32305), (9230, 27223), (12922, 19445)]