21000570591

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^2\times {\mathrm{383}}^1$

素因数の和:498

約数の個数: 192

約数和(自身を含む): 40998666240

約数和(自身を除く): 19998095649

約数列:

[1, 3, 7, 11, 13, 19, 21, 31, 33, 39, 57, 77, 91, 93, 133, 143, 209, 217, 231, 247, 273, 341, 383, 399, 403, 429, 589, 627, 651, 741, 961, 1001, 1023, 1149, 1209, 1463, 1729, 1767, 2387, 2681, 2717, 2821, 2883, 3003, 4123, 4213, 4389, 4433, 4979, 5187, 6479, 6727, 7161, 7277, 7657, 8043, 8151, 8463, 10571, 11873, 12369, 12493, 12639, 13299, 14937, 18259, 19019, 19437, 20181, 21831, 22971, 29491, 31031, 31713, 34853, 35619, 37479, 45353, 50939, 53599, 54769, 54777, 57057, 73997, 80047, 83111, 84227, 87451, 88473, 93093, 94601, 104559, 127813, 130603, 136059, 137423, 152817, 154349, 160797, 164307, 200849, 221991, 225587, 237367, 240141, 249333, 252681, 262353, 283803, 368063, 383383, 383439, 391809, 412269, 463047, 560329, 589589, 602547, 662207, 676761, 712101, 914221, 961961, 1040611, 1080443, 1104189, 1150149, 1405943, 1579109, 1661569, 1680987, 1697839, 1768767, 1986621, 2481457, 2576441, 2611037, 2742663, 2885883, 2932631, 3121833, 3241329, 4048693, 4217829, 4737327, 4784819, 4984707, 5093517, 6993197, 7284277, 7444371, 7729323, 7833111, 8797893, 11884873, 12146079, 14354457, 17370199, 18277259, 20528417, 20979591, 21852831, 28340851, 32258941, 33493733, 35654619, 48952379, 52110597, 52633009, 54831777, 61585251, 76925167, 85022553, 90911561, 96776823, 100481199, 146857137, 157899027, 225812587, 230775501, 272734683, 368431063, 538476169, 636380927, 677437761, 1000027171, 1105293189, 1615428507, 1909142781, 3000081513, 7000190197, 21000570591]

約数ペア:

[(1, 21000570591), (3, 7000190197), (7, 3000081513), (11, 1909142781), (13, 1615428507), (19, 1105293189), (21, 1000027171), (31, 677437761), (33, 636380927), (39, 538476169), (57, 368431063), (77, 272734683), (91, 230775501), (93, 225812587), (133, 157899027), (143, 146857137), (209, 100481199), (217, 96776823), (231, 90911561), (247, 85022553), (273, 76925167), (341, 61585251), (383, 54831777), (399, 52633009), (403, 52110597), (429, 48952379), (589, 35654619), (627, 33493733), (651, 32258941), (741, 28340851), (961, 21852831), (1001, 20979591), (1023, 20528417), (1149, 18277259), (1209, 17370199), (1463, 14354457), (1729, 12146079), (1767, 11884873), (2387, 8797893), (2681, 7833111), (2717, 7729323), (2821, 7444371), (2883, 7284277), (3003, 6993197), (4123, 5093517), (4213, 4984707), (4389, 4784819), (4433, 4737327), (4979, 4217829), (5187, 4048693), (6479, 3241329), (6727, 3121833), (7161, 2932631), (7277, 2885883), (7657, 2742663), (8043, 2611037), (8151, 2576441), (8463, 2481457), (10571, 1986621), (11873, 1768767), (12369, 1697839), (12493, 1680987), (12639, 1661569), (13299, 1579109), (14937, 1405943), (18259, 1150149), (19019, 1104189), (19437, 1080443), (20181, 1040611), (21831, 961961), (22971, 914221), (29491, 712101), (31031, 676761), (31713, 662207), (34853, 602547), (35619, 589589), (37479, 560329), (45353, 463047), (50939, 412269), (53599, 391809), (54769, 383439), (54777, 383383), (57057, 368063), (73997, 283803), (80047, 262353), (83111, 252681), (84227, 249333), (87451, 240141), (88473, 237367), (93093, 225587), (94601, 221991), (104559, 200849), (127813, 164307), (130603, 160797), (136059, 154349), (137423, 152817)]