20161405880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{64811}}^1$

素因数の和:64941

約数の個数: 128

約数和(自身を含む): 57117519360

約数和(自身を除く): 36956113480

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 101, 110, 140, 154, 202, 220, 280, 308, 385, 404, 440, 505, 616, 707, 770, 808, 1010, 1111, 1414, 1540, 2020, 2222, 2828, 3080, 3535, 4040, 4444, 5555, 5656, 7070, 7777, 8888, 11110, 14140, 15554, 22220, 28280, 31108, 38885, 44440, 62216, 64811, 77770, 129622, 155540, 259244, 311080, 324055, 453677, 518488, 648110, 712921, 907354, 1296220, 1425842, 1814708, 2268385, 2592440, 2851684, 3564605, 3629416, 4536770, 4990447, 5703368, 6545911, 7129210, 9073540, 9980894, 13091822, 14258420, 18147080, 19961788, 24952235, 26183644, 28516840, 32729555, 39923576, 45821377, 49904470, 52367288, 65459110, 72005021, 91642754, 99808940, 130918220, 144010042, 183285508, 199617880, 229106885, 261836440, 288020084, 360025105, 366571016, 458213770, 504035147, 576040168, 720050210, 916427540, 1008070294, 1440100420, 1832855080, 2016140588, 2520175735, 2880200840, 4032281176, 5040351470, 10080702940, 20161405880]

約数ペア:

[(1, 20161405880), (2, 10080702940), (4, 5040351470), (5, 4032281176), (7, 2880200840), (8, 2520175735), (10, 2016140588), (11, 1832855080), (14, 1440100420), (20, 1008070294), (22, 916427540), (28, 720050210), (35, 576040168), (40, 504035147), (44, 458213770), (55, 366571016), (56, 360025105), (70, 288020084), (77, 261836440), (88, 229106885), (101, 199617880), (110, 183285508), (140, 144010042), (154, 130918220), (202, 99808940), (220, 91642754), (280, 72005021), (308, 65459110), (385, 52367288), (404, 49904470), (440, 45821377), (505, 39923576), (616, 32729555), (707, 28516840), (770, 26183644), (808, 24952235), (1010, 19961788), (1111, 18147080), (1414, 14258420), (1540, 13091822), (2020, 9980894), (2222, 9073540), (2828, 7129210), (3080, 6545911), (3535, 5703368), (4040, 4990447), (4444, 4536770), (5555, 3629416), (5656, 3564605), (7070, 2851684), (7777, 2592440), (8888, 2268385), (11110, 1814708), (14140, 1425842), (15554, 1296220), (22220, 907354), (28280, 712921), (31108, 648110), (38885, 518488), (44440, 453677), (62216, 324055), (64811, 311080), (77770, 259244), (129622, 155540)]