642081025

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{859}}^1\times {\mathrm{1031}}^1$

素因数の和:1929

約数の個数: 24

約数和(自身を含む): 825393600

約数和(自身を除く): 183312575

約数列:

[1, 5, 25, 29, 145, 725, 859, 1031, 4295, 5155, 21475, 24911, 25775, 29899, 124555, 149495, 622775, 747475, 885629, 4428145, 22140725, 25683241, 128416205, 642081025]

約数ペア:

[(1, 642081025), (5, 128416205), (25, 25683241), (29, 22140725), (145, 4428145), (725, 885629), (859, 747475), (1031, 622775), (4295, 149495), (5155, 124555), (21475, 29899), (24911, 25775)]