20168045121

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{23}}^2\times {\mathrm{47}}^1\times {\mathrm{107}}^1$

素因数の和:248

約数の個数: 144

約数和(自身を含む): 34951440384

約数和(自身を除く): 14783395263

約数列:

[1, 3, 7, 19, 21, 23, 47, 57, 69, 107, 133, 141, 161, 321, 329, 361, 399, 437, 483, 529, 749, 893, 987, 1081, 1083, 1311, 1587, 2033, 2247, 2461, 2527, 2679, 3059, 3243, 3703, 5029, 6099, 6251, 7383, 7567, 7581, 8303, 9177, 10051, 11109, 14231, 15087, 16967, 17227, 18753, 20539, 22701, 24863, 24909, 30153, 35203, 38627, 42693, 46759, 50901, 51681, 56603, 58121, 61617, 70357, 74589, 95551, 105609, 115667, 115881, 118769, 140277, 143773, 169809, 174041, 174363, 190969, 211071, 270389, 286653, 327313, 347001, 356307, 390241, 396221, 431319, 472397, 522123, 572907, 668857, 809669, 811167, 888421, 981939, 1075457, 1170723, 1188663, 1336783, 1417191, 1815469, 2006571, 2197673, 2429007, 2660341, 2665263, 2731687, 3226371, 3306779, 4010349, 5446407, 6218947, 6593019, 7528199, 7981023, 8195061, 8975543, 9920337, 12708283, 15383711, 18622387, 18656841, 20433683, 22584597, 26926629, 38124849, 41755787, 46151133, 50546479, 55867161, 61301049, 62828801, 125267361, 143035781, 151639437, 188486403, 292290509, 353825353, 429107343, 876871527, 960383101, 1061476059, 2881149303, 6722681707, 20168045121]

約数ペア:

[(1, 20168045121), (3, 6722681707), (7, 2881149303), (19, 1061476059), (21, 960383101), (23, 876871527), (47, 429107343), (57, 353825353), (69, 292290509), (107, 188486403), (133, 151639437), (141, 143035781), (161, 125267361), (321, 62828801), (329, 61301049), (361, 55867161), (399, 50546479), (437, 46151133), (483, 41755787), (529, 38124849), (749, 26926629), (893, 22584597), (987, 20433683), (1081, 18656841), (1083, 18622387), (1311, 15383711), (1587, 12708283), (2033, 9920337), (2247, 8975543), (2461, 8195061), (2527, 7981023), (2679, 7528199), (3059, 6593019), (3243, 6218947), (3703, 5446407), (5029, 4010349), (6099, 3306779), (6251, 3226371), (7383, 2731687), (7567, 2665263), (7581, 2660341), (8303, 2429007), (9177, 2197673), (10051, 2006571), (11109, 1815469), (14231, 1417191), (15087, 1336783), (16967, 1188663), (17227, 1170723), (18753, 1075457), (20539, 981939), (22701, 888421), (24863, 811167), (24909, 809669), (30153, 668857), (35203, 572907), (38627, 522123), (42693, 472397), (46759, 431319), (50901, 396221), (51681, 390241), (56603, 356307), (58121, 347001), (61617, 327313), (70357, 286653), (74589, 270389), (95551, 211071), (105609, 190969), (115667, 174363), (115881, 174041), (118769, 169809), (140277, 143773)]