20900649

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{523}}^1$

素因数の和:717

約数の個数: 32

約数和(自身を含む): 35011584

約数和(自身を除く): 14110935

約数列:

[1, 3, 7, 11, 21, 33, 77, 173, 231, 519, 523, 1211, 1569, 1903, 3633, 3661, 5709, 5753, 10983, 13321, 17259, 39963, 40271, 90479, 120813, 271437, 633353, 995269, 1900059, 2985807, 6966883, 20900649]

約数ペア:

[(1, 20900649), (3, 6966883), (7, 2985807), (11, 1900059), (21, 995269), (33, 633353), (77, 271437), (173, 120813), (231, 90479), (519, 40271), (523, 39963), (1211, 17259), (1569, 13321), (1903, 10983), (3633, 5753), (3661, 5709)]