20161294881

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{103}}^1\times {\mathrm{229}}^1$

素因数の和:487

約数の個数: 128

約数和(自身を含む): 34977546240

約数和(自身を除く): 14816251359

約数列:

[1, 3, 7, 13, 21, 31, 39, 91, 93, 101, 103, 217, 229, 273, 303, 309, 403, 651, 687, 707, 721, 1209, 1313, 1339, 1603, 2121, 2163, 2821, 2977, 3131, 3193, 3939, 4017, 4809, 7099, 8463, 8931, 9191, 9373, 9393, 9579, 10403, 20839, 21297, 21917, 22351, 23129, 23587, 27573, 28119, 31209, 40703, 41509, 49693, 62517, 65751, 67053, 69387, 70761, 72821, 92287, 122109, 124527, 135239, 149079, 161903, 165109, 218463, 276861, 284921, 290563, 300677, 306631, 322493, 405717, 485709, 495327, 646009, 716999, 731197, 854763, 871689, 902031, 919893, 946673, 967479, 1938027, 2104739, 2146417, 2150997, 2193591, 2257451, 2382287, 2840019, 4192409, 5018993, 5118379, 6314217, 6439251, 6772353, 7146861, 9320987, 9505561, 12577227, 15056979, 15355137, 16676009, 27962961, 28516683, 29346863, 30969731, 50028027, 65246909, 66538927, 73850897, 88040589, 92909193, 195740727, 199616781, 216788117, 221552691, 516956279, 650364351, 960061661, 1550868837, 2880184983, 6720431627, 20161294881]

約数ペア:

[(1, 20161294881), (3, 6720431627), (7, 2880184983), (13, 1550868837), (21, 960061661), (31, 650364351), (39, 516956279), (91, 221552691), (93, 216788117), (101, 199616781), (103, 195740727), (217, 92909193), (229, 88040589), (273, 73850897), (303, 66538927), (309, 65246909), (403, 50028027), (651, 30969731), (687, 29346863), (707, 28516683), (721, 27962961), (1209, 16676009), (1313, 15355137), (1339, 15056979), (1603, 12577227), (2121, 9505561), (2163, 9320987), (2821, 7146861), (2977, 6772353), (3131, 6439251), (3193, 6314217), (3939, 5118379), (4017, 5018993), (4809, 4192409), (7099, 2840019), (8463, 2382287), (8931, 2257451), (9191, 2193591), (9373, 2150997), (9393, 2146417), (9579, 2104739), (10403, 1938027), (20839, 967479), (21297, 946673), (21917, 919893), (22351, 902031), (23129, 871689), (23587, 854763), (27573, 731197), (28119, 716999), (31209, 646009), (40703, 495327), (41509, 485709), (49693, 405717), (62517, 322493), (65751, 306631), (67053, 300677), (69387, 290563), (70761, 284921), (72821, 276861), (92287, 218463), (122109, 165109), (124527, 161903), (135239, 149079)]