256396530

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{15289}}^1$

素因数の和:15355

約数の個数: 64

約数和(自身を含む): 678142080

約数和(自身を除く): 421745550

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 43, 65, 78, 86, 129, 130, 195, 215, 258, 390, 430, 559, 645, 1118, 1290, 1677, 2795, 3354, 5590, 8385, 15289, 16770, 30578, 45867, 76445, 91734, 152890, 198757, 229335, 397514, 458670, 596271, 657427, 993785, 1192542, 1314854, 1972281, 1987570, 2981355, 3287135, 3944562, 5962710, 6574270, 8546551, 9861405, 17093102, 19722810, 25639653, 42732755, 51279306, 85465510, 128198265, 256396530]

約数ペア:

[(1, 256396530), (2, 128198265), (3, 85465510), (5, 51279306), (6, 42732755), (10, 25639653), (13, 19722810), (15, 17093102), (26, 9861405), (30, 8546551), (39, 6574270), (43, 5962710), (65, 3944562), (78, 3287135), (86, 2981355), (129, 1987570), (130, 1972281), (195, 1314854), (215, 1192542), (258, 993785), (390, 657427), (430, 596271), (559, 458670), (645, 397514), (1118, 229335), (1290, 198757), (1677, 152890), (2795, 91734), (3354, 76445), (5590, 45867), (8385, 30578), (15289, 16770)]