20489546

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{229}}^1$

素因数の和:339

約数の個数: 48

約数和(自身を含む): 39644640

約数和(自身を除く): 19155094

約数列:

[1, 2, 7, 11, 14, 22, 49, 77, 83, 98, 154, 166, 229, 458, 539, 581, 913, 1078, 1162, 1603, 1826, 2519, 3206, 4067, 5038, 6391, 8134, 11221, 12782, 17633, 19007, 22442, 35266, 38014, 44737, 89474, 123431, 133049, 209077, 246862, 266098, 418154, 931343, 1463539, 1862686, 2927078, 10244773, 20489546]

約数ペア:

[(1, 20489546), (2, 10244773), (7, 2927078), (11, 1862686), (14, 1463539), (22, 931343), (49, 418154), (77, 266098), (83, 246862), (98, 209077), (154, 133049), (166, 123431), (229, 89474), (458, 44737), (539, 38014), (581, 35266), (913, 22442), (1078, 19007), (1162, 17633), (1603, 12782), (1826, 11221), (2519, 8134), (3206, 6391), (4067, 5038)]