280238455

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{149}}^1$

素因数の和:316

約数の個数: 64

約数和(自身を含む): 427680000

約数和(自身を除く): 147441545

約数列:

[1, 5, 7, 17, 29, 35, 85, 109, 119, 145, 149, 203, 493, 545, 595, 745, 763, 1015, 1043, 1853, 2465, 2533, 3161, 3451, 3815, 4321, 5215, 9265, 12665, 12971, 15805, 16241, 17255, 17731, 21605, 22127, 30247, 53737, 64855, 73457, 81205, 88655, 110635, 113687, 151235, 268685, 276097, 367285, 376159, 470989, 514199, 568435, 1380485, 1880795, 1932679, 2354945, 2570995, 3296923, 8006813, 9663395, 16484615, 40034065, 56047691, 280238455]

約数ペア:

[(1, 280238455), (5, 56047691), (7, 40034065), (17, 16484615), (29, 9663395), (35, 8006813), (85, 3296923), (109, 2570995), (119, 2354945), (145, 1932679), (149, 1880795), (203, 1380485), (493, 568435), (545, 514199), (595, 470989), (745, 376159), (763, 367285), (1015, 276097), (1043, 268685), (1853, 151235), (2465, 113687), (2533, 110635), (3161, 88655), (3451, 81205), (3815, 73457), (4321, 64855), (5215, 53737), (9265, 30247), (12665, 22127), (12971, 21605), (15805, 17731), (16241, 17255)]