81320012

素因数分解:

$2^2\times {\mathrm{89}}^1\times {\mathrm{228427}}^1$

素因数の和:228520

約数の個数: 12

約数和(自身を含む): 143909640

約数和(自身を除く): 62589628

約数列:

[1, 2, 4, 89, 178, 356, 228427, 456854, 913708, 20330003, 40660006, 81320012]

約数ペア:

[(1, 81320012), (2, 40660006), (4, 20330003), (89, 913708), (178, 456854), (356, 228427)]