80121025

素因数分解:

$5^2\times {\mathrm{137}}^1\times {\mathrm{149}}^1\times {\mathrm{157}}^1$

素因数の和:453

約数の個数: 24

約数和(自身を含む): 101388600

約数和(自身を除く): 21267575

約数列:

[1, 5, 25, 137, 149, 157, 685, 745, 785, 3425, 3725, 3925, 20413, 21509, 23393, 102065, 107545, 116965, 510325, 537725, 584825, 3204841, 16024205, 80121025]

約数ペア:

[(1, 80121025), (5, 16024205), (25, 3204841), (137, 584825), (149, 537725), (157, 510325), (685, 116965), (745, 107545), (785, 102065), (3425, 23393), (3725, 21509), (3925, 20413)]