20292909

素因数分解:

$3^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1$

素因数の和:115

約数の個数: 64

約数和(自身を含む): 35750400

約数和(自身を除く): 15457491

約数列:

[1, 3, 7, 13, 21, 37, 39, 41, 49, 91, 111, 123, 147, 259, 273, 287, 343, 481, 533, 637, 777, 861, 1029, 1443, 1517, 1599, 1813, 1911, 2009, 3367, 3731, 4459, 4551, 5439, 6027, 10101, 10619, 11193, 12691, 13377, 14063, 19721, 23569, 26117, 31857, 38073, 42189, 59163, 70707, 74333, 78351, 138047, 164983, 182819, 222999, 414141, 494949, 520331, 548457, 966329, 1560993, 2898987, 6764303, 20292909]

約数ペア:

[(1, 20292909), (3, 6764303), (7, 2898987), (13, 1560993), (21, 966329), (37, 548457), (39, 520331), (41, 494949), (49, 414141), (91, 222999), (111, 182819), (123, 164983), (147, 138047), (259, 78351), (273, 74333), (287, 70707), (343, 59163), (481, 42189), (533, 38073), (637, 31857), (777, 26117), (861, 23569), (1029, 19721), (1443, 14063), (1517, 13377), (1599, 12691), (1813, 11193), (1911, 10619), (2009, 10101), (3367, 6027), (3731, 5439), (4459, 4551)]