217910161

素因数分解:

$7^1\times {\mathrm{139}}^1\times {\mathrm{281}}^1\times {\mathrm{797}}^1$

素因数の和:1224

約数の個数: 16

約数和(自身を含む): 252040320

約数和(自身を除く): 34130159

約数列:

[1, 7, 139, 281, 797, 973, 1967, 5579, 39059, 110783, 223957, 273413, 775481, 1567699, 31130023, 217910161]

約数ペア:

[(1, 217910161), (7, 31130023), (139, 1567699), (281, 775481), (797, 273413), (973, 223957), (1967, 110783), (5579, 39059)]