20653545

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1$

素因数の和:174

約数の個数: 64

約数和(自身を含む): 38320128

約数和(自身を除く): 17666583

約数列:

[1, 3, 5, 11, 15, 33, 41, 43, 55, 71, 123, 129, 165, 205, 213, 215, 355, 451, 473, 615, 645, 781, 1065, 1353, 1419, 1763, 2255, 2343, 2365, 2911, 3053, 3905, 5289, 6765, 7095, 8733, 8815, 9159, 11715, 14555, 15265, 19393, 26445, 32021, 33583, 43665, 45795, 58179, 96063, 96965, 100749, 125173, 160105, 167915, 290895, 375519, 480315, 503745, 625865, 1376903, 1877595, 4130709, 6884515, 20653545]

約数ペア:

[(1, 20653545), (3, 6884515), (5, 4130709), (11, 1877595), (15, 1376903), (33, 625865), (41, 503745), (43, 480315), (55, 375519), (71, 290895), (123, 167915), (129, 160105), (165, 125173), (205, 100749), (213, 96965), (215, 96063), (355, 58179), (451, 45795), (473, 43665), (615, 33583), (645, 32021), (781, 26445), (1065, 19393), (1353, 15265), (1419, 14555), (1763, 11715), (2255, 9159), (2343, 8815), (2365, 8733), (2911, 7095), (3053, 6765), (3905, 5289)]