20415208

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{1669}}^1$

素因数の和:1825

約数の個数: 32

約数和(自身を含む): 42084000

約数和(自身を除く): 21668792

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 139, 278, 556, 1112, 1529, 1669, 3058, 3338, 6116, 6676, 12232, 13352, 18359, 36718, 73436, 146872, 231991, 463982, 927964, 1855928, 2551901, 5103802, 10207604, 20415208]

約数ペア:

[(1, 20415208), (2, 10207604), (4, 5103802), (8, 2551901), (11, 1855928), (22, 927964), (44, 463982), (88, 231991), (139, 146872), (278, 73436), (556, 36718), (1112, 18359), (1529, 13352), (1669, 12232), (3058, 6676), (3338, 6116)]