9987915

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{107}}^1\times {\mathrm{127}}^1$

素因数の和:256

約数の個数: 48

約数和(自身を含む): 18911232

約数和(自身を除く): 8923317

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 107, 127, 147, 245, 321, 381, 535, 635, 735, 749, 889, 1605, 1905, 2247, 2667, 3745, 4445, 5243, 6223, 11235, 13335, 13589, 15729, 18669, 26215, 31115, 40767, 67945, 78645, 93345, 95123, 203835, 285369, 475615, 665861, 1426845, 1997583, 3329305, 9987915]

約数ペア:

[(1, 9987915), (3, 3329305), (5, 1997583), (7, 1426845), (15, 665861), (21, 475615), (35, 285369), (49, 203835), (105, 95123), (107, 93345), (127, 78645), (147, 67945), (245, 40767), (321, 31115), (381, 26215), (535, 18669), (635, 15729), (735, 13589), (749, 13335), (889, 11235), (1605, 6223), (1905, 5243), (2247, 4445), (2667, 3745)]