256529840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{3607}}^1$

素因数の和:3754

約数の個数: 80

約数和(自身を含む): 687194112

約数和(自身を除く): 430664272

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 127, 140, 254, 280, 508, 560, 635, 889, 1016, 1270, 1778, 2032, 2540, 3556, 3607, 4445, 5080, 7112, 7214, 8890, 10160, 14224, 14428, 17780, 18035, 25249, 28856, 35560, 36070, 50498, 57712, 71120, 72140, 100996, 126245, 144280, 201992, 252490, 288560, 403984, 458089, 504980, 916178, 1009960, 1832356, 2019920, 2290445, 3206623, 3664712, 4580890, 6413246, 7329424, 9161780, 12826492, 16033115, 18323560, 25652984, 32066230, 36647120, 51305968, 64132460, 128264920, 256529840]

約数ペア:

[(1, 256529840), (2, 128264920), (4, 64132460), (5, 51305968), (7, 36647120), (8, 32066230), (10, 25652984), (14, 18323560), (16, 16033115), (20, 12826492), (28, 9161780), (35, 7329424), (40, 6413246), (56, 4580890), (70, 3664712), (80, 3206623), (112, 2290445), (127, 2019920), (140, 1832356), (254, 1009960), (280, 916178), (508, 504980), (560, 458089), (635, 403984), (889, 288560), (1016, 252490), (1270, 201992), (1778, 144280), (2032, 126245), (2540, 100996), (3556, 72140), (3607, 71120), (4445, 57712), (5080, 50498), (7112, 36070), (7214, 35560), (8890, 28856), (10160, 25249), (14224, 18035), (14428, 17780)]