20375740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{131}}^1$

素因数の和:259

約数の個数: 96

約数和(自身を含む): 54286848

約数和(自身を除く): 33911108

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 101, 110, 131, 140, 154, 202, 220, 262, 308, 385, 404, 505, 524, 655, 707, 770, 917, 1010, 1111, 1310, 1414, 1441, 1540, 1834, 2020, 2222, 2620, 2828, 2882, 3535, 3668, 4444, 4585, 5555, 5764, 7070, 7205, 7777, 9170, 10087, 11110, 13231, 14140, 14410, 15554, 18340, 20174, 22220, 26462, 28820, 31108, 38885, 40348, 50435, 52924, 66155, 77770, 92617, 100870, 132310, 145541, 155540, 185234, 201740, 264620, 291082, 370468, 463085, 582164, 727705, 926170, 1018787, 1455410, 1852340, 2037574, 2910820, 4075148, 5093935, 10187870, 20375740]

約数ペア:

[(1, 20375740), (2, 10187870), (4, 5093935), (5, 4075148), (7, 2910820), (10, 2037574), (11, 1852340), (14, 1455410), (20, 1018787), (22, 926170), (28, 727705), (35, 582164), (44, 463085), (55, 370468), (70, 291082), (77, 264620), (101, 201740), (110, 185234), (131, 155540), (140, 145541), (154, 132310), (202, 100870), (220, 92617), (262, 77770), (308, 66155), (385, 52924), (404, 50435), (505, 40348), (524, 38885), (655, 31108), (707, 28820), (770, 26462), (917, 22220), (1010, 20174), (1111, 18340), (1310, 15554), (1414, 14410), (1441, 14140), (1540, 13231), (1834, 11110), (2020, 10087), (2222, 9170), (2620, 7777), (2828, 7205), (2882, 7070), (3535, 5764), (3668, 5555), (4444, 4585)]