20255235

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1$

素因数の和:129

約数の個数: 128

約数和(自身を含む): 46448640

約数和(自身を除く): 26193405

約数列:

[1, 3, 5, 7, 11, 13, 15, 19, 21, 33, 35, 39, 55, 57, 65, 71, 77, 91, 95, 105, 133, 143, 165, 195, 209, 213, 231, 247, 273, 285, 355, 385, 399, 429, 455, 497, 627, 665, 715, 741, 781, 923, 1001, 1045, 1065, 1155, 1235, 1349, 1365, 1463, 1491, 1729, 1995, 2145, 2343, 2485, 2717, 2769, 3003, 3135, 3705, 3905, 4047, 4389, 4615, 5005, 5187, 5467, 6461, 6745, 7315, 7455, 8151, 8645, 9443, 10153, 11715, 13585, 13845, 14839, 15015, 16401, 17537, 19019, 19383, 20235, 21945, 25935, 27335, 28329, 30459, 32305, 40755, 44517, 47215, 50765, 52611, 57057, 71071, 74195, 82005, 87685, 95095, 96915, 103873, 122759, 141645, 152295, 192907, 213213, 222585, 263055, 285285, 311619, 355355, 368277, 519365, 578721, 613795, 964535, 1066065, 1350349, 1558095, 1841385, 2893605, 4051047, 6751745, 20255235]

約数ペア:

[(1, 20255235), (3, 6751745), (5, 4051047), (7, 2893605), (11, 1841385), (13, 1558095), (15, 1350349), (19, 1066065), (21, 964535), (33, 613795), (35, 578721), (39, 519365), (55, 368277), (57, 355355), (65, 311619), (71, 285285), (77, 263055), (91, 222585), (95, 213213), (105, 192907), (133, 152295), (143, 141645), (165, 122759), (195, 103873), (209, 96915), (213, 95095), (231, 87685), (247, 82005), (273, 74195), (285, 71071), (355, 57057), (385, 52611), (399, 50765), (429, 47215), (455, 44517), (497, 40755), (627, 32305), (665, 30459), (715, 28329), (741, 27335), (781, 25935), (923, 21945), (1001, 20235), (1045, 19383), (1065, 19019), (1155, 17537), (1235, 16401), (1349, 15015), (1365, 14839), (1463, 13845), (1491, 13585), (1729, 11715), (1995, 10153), (2145, 9443), (2343, 8645), (2485, 8151), (2717, 7455), (2769, 7315), (3003, 6745), (3135, 6461), (3705, 5467), (3905, 5187), (4047, 5005), (4389, 4615)]