257128950

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{131861}}^1$

素因数の和:131889

約数の個数: 48

約数和(自身を含む): 686737296

約数和(自身を除く): 429608346

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 25, 26, 30, 39, 50, 65, 75, 78, 130, 150, 195, 325, 390, 650, 975, 1950, 131861, 263722, 395583, 659305, 791166, 1318610, 1714193, 1977915, 3296525, 3428386, 3955830, 5142579, 6593050, 8570965, 9889575, 10285158, 17141930, 19779150, 25712895, 42854825, 51425790, 85709650, 128564475, 257128950]

約数ペア:

[(1, 257128950), (2, 128564475), (3, 85709650), (5, 51425790), (6, 42854825), (10, 25712895), (13, 19779150), (15, 17141930), (25, 10285158), (26, 9889575), (30, 8570965), (39, 6593050), (50, 5142579), (65, 3955830), (75, 3428386), (78, 3296525), (130, 1977915), (150, 1714193), (195, 1318610), (325, 791166), (390, 659305), (650, 395583), (975, 263722), (1950, 131861)]