20391525

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{107}}^1$

素因数の和:152

約数の個数: 108

約数和(自身を含む): 46309536

約数和(自身を除く): 25918011

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 25, 33, 35, 45, 55, 63, 75, 77, 99, 105, 107, 121, 165, 175, 225, 231, 275, 315, 321, 363, 385, 495, 525, 535, 605, 693, 749, 825, 847, 963, 1089, 1155, 1177, 1575, 1605, 1815, 1925, 2247, 2475, 2541, 2675, 3025, 3465, 3531, 3745, 4235, 4815, 5445, 5775, 5885, 6741, 7623, 8025, 8239, 9075, 10593, 11235, 12705, 12947, 17325, 17655, 18725, 21175, 24075, 24717, 27225, 29425, 33705, 38115, 38841, 41195, 52965, 56175, 63525, 64735, 74151, 88275, 90629, 116523, 123585, 168525, 190575, 194205, 205975, 264825, 271887, 323675, 370755, 453145, 582615, 617925, 815661, 971025, 1359435, 1853775, 2265725, 2913075, 4078305, 6797175, 20391525]

約数ペア:

[(1, 20391525), (3, 6797175), (5, 4078305), (7, 2913075), (9, 2265725), (11, 1853775), (15, 1359435), (21, 971025), (25, 815661), (33, 617925), (35, 582615), (45, 453145), (55, 370755), (63, 323675), (75, 271887), (77, 264825), (99, 205975), (105, 194205), (107, 190575), (121, 168525), (165, 123585), (175, 116523), (225, 90629), (231, 88275), (275, 74151), (315, 64735), (321, 63525), (363, 56175), (385, 52965), (495, 41195), (525, 38841), (535, 38115), (605, 33705), (693, 29425), (749, 27225), (825, 24717), (847, 24075), (963, 21175), (1089, 18725), (1155, 17655), (1177, 17325), (1575, 12947), (1605, 12705), (1815, 11235), (1925, 10593), (2247, 9075), (2475, 8239), (2541, 8025), (2675, 7623), (3025, 6741), (3465, 5885), (3531, 5775), (3745, 5445), (4235, 4815)]