220173513

素因数分解:

$3^1\times 7^2\times {\mathrm{353}}^1\times {\mathrm{4243}}^1$

素因数の和:4613

約数の個数: 24

約数和(自身を含む): 342541728

約数和(自身を除く): 122368215

約数列:

[1, 3, 7, 21, 49, 147, 353, 1059, 2471, 4243, 7413, 12729, 17297, 29701, 51891, 89103, 207907, 623721, 1497779, 4493337, 10484453, 31453359, 73391171, 220173513]

約数ペア:

[(1, 220173513), (3, 73391171), (7, 31453359), (21, 10484453), (49, 4493337), (147, 1497779), (353, 623721), (1059, 207907), (2471, 89103), (4243, 51891), (7413, 29701), (12729, 17297)]