256799478

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{241}}^1\times {\mathrm{719}}^1$

素因数の和:997

約数の個数: 64

約数和(自身を含む): 585446400

約数和(自身を除く): 328646922

約数列:

[1, 2, 3, 6, 13, 19, 26, 38, 39, 57, 78, 114, 241, 247, 482, 494, 719, 723, 741, 1438, 1446, 1482, 2157, 3133, 4314, 4579, 6266, 9158, 9347, 9399, 13661, 13737, 18694, 18798, 27322, 27474, 28041, 40983, 56082, 59527, 81966, 119054, 173279, 177593, 178581, 346558, 355186, 357162, 519837, 532779, 1039674, 1065558, 2252627, 3292301, 4505254, 6584602, 6757881, 9876903, 13515762, 19753806, 42799913, 85599826, 128399739, 256799478]

約数ペア:

[(1, 256799478), (2, 128399739), (3, 85599826), (6, 42799913), (13, 19753806), (19, 13515762), (26, 9876903), (38, 6757881), (39, 6584602), (57, 4505254), (78, 3292301), (114, 2252627), (241, 1065558), (247, 1039674), (482, 532779), (494, 519837), (719, 357162), (723, 355186), (741, 346558), (1438, 178581), (1446, 177593), (1482, 173279), (2157, 119054), (3133, 81966), (4314, 59527), (4579, 56082), (6266, 40983), (9158, 28041), (9347, 27474), (9399, 27322), (13661, 18798), (13737, 18694)]