20512073475

素因数分解:

$3^6\times 5^2\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{283}}^1$

素因数の和:449

約数の個数: 168

約数和(自身を含む): 39607329552

約数和(自身を除く): 19095256077

約数列:

[1, 3, 5, 9, 15, 25, 27, 41, 45, 75, 81, 97, 123, 135, 205, 225, 243, 283, 291, 369, 405, 485, 615, 675, 729, 849, 873, 1025, 1107, 1215, 1415, 1455, 1845, 2025, 2425, 2547, 2619, 3075, 3321, 3645, 3977, 4245, 4365, 5535, 6075, 7075, 7275, 7641, 7857, 9225, 9963, 11603, 11931, 12735, 13095, 16605, 18225, 19885, 21225, 21825, 22923, 23571, 27451, 27675, 29889, 34809, 35793, 38205, 39285, 49815, 58015, 59655, 63675, 65475, 68769, 70713, 82353, 83025, 99425, 104427, 107379, 114615, 117855, 137255, 149445, 174045, 178965, 191025, 196425, 206307, 247059, 249075, 290075, 298275, 313281, 322137, 343845, 353565, 411765, 522135, 536895, 573075, 589275, 686275, 741177, 747225, 870225, 894825, 939843, 966411, 1031535, 1125491, 1235295, 1566405, 1610685, 1719225, 1767825, 2058825, 2223531, 2610675, 2684475, 2819529, 2899233, 3376473, 3705885, 4699215, 4832055, 5157675, 5627455, 6176475, 6670593, 7832025, 8053425, 8458587, 10129419, 11117655, 14097645, 14496165, 16882365, 18529425, 20011779, 23496075, 24160275, 28137275, 30388257, 33352965, 42292935, 50647095, 55588275, 70488225, 72480825, 84411825, 91164771, 100058895, 151941285, 166764825, 211464675, 253235475, 273494313, 455823855, 500294475, 759706425, 820482939, 1367471565, 2279119275, 4102414695, 6837357825, 20512073475]

約数ペア:

[(1, 20512073475), (3, 6837357825), (5, 4102414695), (9, 2279119275), (15, 1367471565), (25, 820482939), (27, 759706425), (41, 500294475), (45, 455823855), (75, 273494313), (81, 253235475), (97, 211464675), (123, 166764825), (135, 151941285), (205, 100058895), (225, 91164771), (243, 84411825), (283, 72480825), (291, 70488225), (369, 55588275), (405, 50647095), (485, 42292935), (615, 33352965), (675, 30388257), (729, 28137275), (849, 24160275), (873, 23496075), (1025, 20011779), (1107, 18529425), (1215, 16882365), (1415, 14496165), (1455, 14097645), (1845, 11117655), (2025, 10129419), (2425, 8458587), (2547, 8053425), (2619, 7832025), (3075, 6670593), (3321, 6176475), (3645, 5627455), (3977, 5157675), (4245, 4832055), (4365, 4699215), (5535, 3705885), (6075, 3376473), (7075, 2899233), (7275, 2819529), (7641, 2684475), (7857, 2610675), (9225, 2223531), (9963, 2058825), (11603, 1767825), (11931, 1719225), (12735, 1610685), (13095, 1566405), (16605, 1235295), (18225, 1125491), (19885, 1031535), (21225, 966411), (21825, 939843), (22923, 894825), (23571, 870225), (27451, 747225), (27675, 741177), (29889, 686275), (34809, 589275), (35793, 573075), (38205, 536895), (39285, 522135), (49815, 411765), (58015, 353565), (59655, 343845), (63675, 322137), (65475, 313281), (68769, 298275), (70713, 290075), (82353, 249075), (83025, 247059), (99425, 206307), (104427, 196425), (107379, 191025), (114615, 178965), (117855, 174045), (137255, 149445)]