21099496

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{71}}^1\times {\mathrm{307}}^1$

素因数の和:406

約数の個数: 48

約数和(自身を含む): 44241120

約数和(自身を除く): 23141624

約数列:

[1, 2, 4, 8, 11, 22, 44, 71, 88, 121, 142, 242, 284, 307, 484, 568, 614, 781, 968, 1228, 1562, 2456, 3124, 3377, 6248, 6754, 8591, 13508, 17182, 21797, 27016, 34364, 37147, 43594, 68728, 74294, 87188, 148588, 174376, 239767, 297176, 479534, 959068, 1918136, 2637437, 5274874, 10549748, 21099496]

約数ペア:

[(1, 21099496), (2, 10549748), (4, 5274874), (8, 2637437), (11, 1918136), (22, 959068), (44, 479534), (71, 297176), (88, 239767), (121, 174376), (142, 148588), (242, 87188), (284, 74294), (307, 68728), (484, 43594), (568, 37147), (614, 34364), (781, 27016), (968, 21797), (1228, 17182), (1562, 13508), (2456, 8591), (3124, 6754), (3377, 6248)]