20880468

素因数分解:

$2^2\times 3^2\times 7^3\times {\mathrm{19}}^1\times {\mathrm{89}}^1$

素因数の和:139

約数の個数: 144

約数和(自身を含む): 65520000

約数和(自身を除く): 44639532

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 19, 21, 28, 36, 38, 42, 49, 57, 63, 76, 84, 89, 98, 114, 126, 133, 147, 171, 178, 196, 228, 252, 266, 267, 294, 342, 343, 356, 399, 441, 532, 534, 588, 623, 684, 686, 798, 801, 882, 931, 1029, 1068, 1197, 1246, 1372, 1596, 1602, 1691, 1764, 1862, 1869, 2058, 2394, 2492, 2793, 3087, 3204, 3382, 3724, 3738, 4116, 4361, 4788, 5073, 5586, 5607, 6174, 6517, 6764, 7476, 8379, 8722, 10146, 11172, 11214, 11837, 12348, 13034, 13083, 15219, 16758, 17444, 19551, 20292, 22428, 23674, 26068, 26166, 30438, 30527, 33516, 35511, 39102, 39249, 47348, 52332, 58653, 60876, 61054, 71022, 78204, 78498, 82859, 91581, 106533, 117306, 122108, 142044, 156996, 165718, 183162, 213066, 234612, 248577, 274743, 331436, 366324, 426132, 497154, 549486, 580013, 745731, 994308, 1098972, 1160026, 1491462, 1740039, 2320052, 2982924, 3480078, 5220117, 6960156, 10440234, 20880468]

約数ペア:

[(1, 20880468), (2, 10440234), (3, 6960156), (4, 5220117), (6, 3480078), (7, 2982924), (9, 2320052), (12, 1740039), (14, 1491462), (18, 1160026), (19, 1098972), (21, 994308), (28, 745731), (36, 580013), (38, 549486), (42, 497154), (49, 426132), (57, 366324), (63, 331436), (76, 274743), (84, 248577), (89, 234612), (98, 213066), (114, 183162), (126, 165718), (133, 156996), (147, 142044), (171, 122108), (178, 117306), (196, 106533), (228, 91581), (252, 82859), (266, 78498), (267, 78204), (294, 71022), (342, 61054), (343, 60876), (356, 58653), (399, 52332), (441, 47348), (532, 39249), (534, 39102), (588, 35511), (623, 33516), (684, 30527), (686, 30438), (798, 26166), (801, 26068), (882, 23674), (931, 22428), (1029, 20292), (1068, 19551), (1197, 17444), (1246, 16758), (1372, 15219), (1596, 13083), (1602, 13034), (1691, 12348), (1764, 11837), (1862, 11214), (1869, 11172), (2058, 10146), (2394, 8722), (2492, 8379), (2793, 7476), (3087, 6764), (3204, 6517), (3382, 6174), (3724, 5607), (3738, 5586), (4116, 5073), (4361, 4788)]