257457148

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{73897}}^1$

素因数の和:73981

約数の個数: 24

約数和(自身を含む): 492456272

約数和(自身を除く): 234999124

約数列:

[1, 2, 4, 13, 26, 52, 67, 134, 268, 871, 1742, 3484, 73897, 147794, 295588, 960661, 1921322, 3842644, 4951099, 9902198, 19804396, 64364287, 128728574, 257457148]

約数ペア:

[(1, 257457148), (2, 128728574), (4, 64364287), (13, 19804396), (26, 9902198), (52, 4951099), (67, 3842644), (134, 1921322), (268, 960661), (871, 295588), (1742, 147794), (3484, 73897)]