20115040

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^2\times {\mathrm{1039}}^1$

素因数の和:1076

約数の個数: 72

約数和(自身を含む): 52284960

約数和(自身を除く): 32169920

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 121, 160, 176, 220, 242, 352, 440, 484, 605, 880, 968, 1039, 1210, 1760, 1936, 2078, 2420, 3872, 4156, 4840, 5195, 8312, 9680, 10390, 11429, 16624, 19360, 20780, 22858, 33248, 41560, 45716, 57145, 83120, 91432, 114290, 125719, 166240, 182864, 228580, 251438, 365728, 457160, 502876, 628595, 914320, 1005752, 1257190, 1828640, 2011504, 2514380, 4023008, 5028760, 10057520, 20115040]

約数ペア:

[(1, 20115040), (2, 10057520), (4, 5028760), (5, 4023008), (8, 2514380), (10, 2011504), (11, 1828640), (16, 1257190), (20, 1005752), (22, 914320), (32, 628595), (40, 502876), (44, 457160), (55, 365728), (80, 251438), (88, 228580), (110, 182864), (121, 166240), (160, 125719), (176, 114290), (220, 91432), (242, 83120), (352, 57145), (440, 45716), (484, 41560), (605, 33248), (880, 22858), (968, 20780), (1039, 19360), (1210, 16624), (1760, 11429), (1936, 10390), (2078, 9680), (2420, 8312), (3872, 5195), (4156, 4840)]