256280920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{7207}}^1$

素因数の和:7352

約数の個数: 64

約数和(自身を含む): 664289280

約数和(自身を除く): 408008360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 127, 140, 254, 280, 508, 635, 889, 1016, 1270, 1778, 2540, 3556, 4445, 5080, 7112, 7207, 8890, 14414, 17780, 28828, 35560, 36035, 50449, 57656, 72070, 100898, 144140, 201796, 252245, 288280, 403592, 504490, 915289, 1008980, 1830578, 2017960, 3661156, 4576445, 6407023, 7322312, 9152890, 12814046, 18305780, 25628092, 32035115, 36611560, 51256184, 64070230, 128140460, 256280920]

約数ペア:

[(1, 256280920), (2, 128140460), (4, 64070230), (5, 51256184), (7, 36611560), (8, 32035115), (10, 25628092), (14, 18305780), (20, 12814046), (28, 9152890), (35, 7322312), (40, 6407023), (56, 4576445), (70, 3661156), (127, 2017960), (140, 1830578), (254, 1008980), (280, 915289), (508, 504490), (635, 403592), (889, 288280), (1016, 252245), (1270, 201796), (1778, 144140), (2540, 100898), (3556, 72070), (4445, 57656), (5080, 50449), (7112, 36035), (7207, 35560), (8890, 28828), (14414, 17780)]