978018025

素因数分解:

$5^2\times {\mathrm{79}}^1\times {\mathrm{495199}}^1$

素因数の和:495288

約数の個数: 12

約数和(自身を含む): 1228096000

約数和(自身を除く): 250077975

約数列:

[1, 5, 25, 79, 395, 1975, 495199, 2475995, 12379975, 39120721, 195603605, 978018025]

約数ペア:

[(1, 978018025), (5, 195603605), (25, 39120721), (79, 12379975), (395, 2475995), (1975, 495199)]