256534040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{439}}^1\times {\mathrm{2087}}^1$

素因数の和:2544

約数の個数: 64

約数和(自身を含む): 661478400

約数和(自身を除く): 404944360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 439, 878, 1756, 2087, 2195, 3073, 3512, 4174, 4390, 6146, 8348, 8780, 10435, 12292, 14609, 15365, 16696, 17560, 20870, 24584, 29218, 30730, 41740, 58436, 61460, 73045, 83480, 116872, 122920, 146090, 292180, 584360, 916193, 1832386, 3664772, 4580965, 6413351, 7329544, 9161930, 12826702, 18323860, 25653404, 32066755, 36647720, 51306808, 64133510, 128267020, 256534040]

約数ペア:

[(1, 256534040), (2, 128267020), (4, 64133510), (5, 51306808), (7, 36647720), (8, 32066755), (10, 25653404), (14, 18323860), (20, 12826702), (28, 9161930), (35, 7329544), (40, 6413351), (56, 4580965), (70, 3664772), (140, 1832386), (280, 916193), (439, 584360), (878, 292180), (1756, 146090), (2087, 122920), (2195, 116872), (3073, 83480), (3512, 73045), (4174, 61460), (4390, 58436), (6146, 41740), (8348, 30730), (8780, 29218), (10435, 24584), (12292, 20870), (14609, 17560), (15365, 16696)]