208164025

素因数分解:

$5^2\times {\mathrm{61}}^1\times {\mathrm{136501}}^1$

素因数の和:136572

約数の個数: 12

約数和(自身を含む): 262356844

約数和(自身を除く): 54192819

約数列:

[1, 5, 25, 61, 305, 1525, 136501, 682505, 3412525, 8326561, 41632805, 208164025]

約数ペア:

[(1, 208164025), (5, 41632805), (25, 8326561), (61, 3412525), (305, 682505), (1525, 136501)]