2019908891

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1\times {\mathrm{293}}^1$

素因数の和:492

約数の個数: 64

約数和(自身を含む): 2788079616

約数和(自身を除く): 768170725

約数列:

[1, 7, 11, 13, 71, 77, 91, 97, 143, 293, 497, 679, 781, 923, 1001, 1067, 1261, 2051, 3223, 3809, 5467, 6461, 6887, 7469, 8827, 10153, 13871, 20803, 22561, 26663, 28421, 41899, 48209, 71071, 75757, 89531, 97097, 145621, 198947, 228833, 270439, 293293, 312631, 369473, 530299, 626717, 984841, 1601831, 1893073, 2017891, 2188417, 2586311, 2974829, 4064203, 6893887, 14125237, 20823803, 22196801, 26232583, 28449421, 155377607, 183628081, 288558413, 2019908891]

約数ペア:

[(1, 2019908891), (7, 288558413), (11, 183628081), (13, 155377607), (71, 28449421), (77, 26232583), (91, 22196801), (97, 20823803), (143, 14125237), (293, 6893887), (497, 4064203), (679, 2974829), (781, 2586311), (923, 2188417), (1001, 2017891), (1067, 1893073), (1261, 1601831), (2051, 984841), (3223, 626717), (3809, 530299), (5467, 369473), (6461, 312631), (6887, 293293), (7469, 270439), (8827, 228833), (10153, 198947), (13871, 145621), (20803, 97097), (22561, 89531), (26663, 75757), (28421, 71071), (41899, 48209)]