78117575

素因数分解:

$5^2\times {\mathrm{109}}^2\times {\mathrm{263}}^1$

素因数の和:491

約数の個数: 18

約数和(自身を含む): 98134344

約数和(自身を除く): 20016769

約数列:

[1, 5, 25, 109, 263, 545, 1315, 2725, 6575, 11881, 28667, 59405, 143335, 297025, 716675, 3124703, 15623515, 78117575]

約数ペア:

[(1, 78117575), (5, 15623515), (25, 3124703), (109, 716675), (263, 297025), (545, 143335), (1315, 59405), (2725, 28667), (6575, 11881)]