1639972225

素因数分解:

$5^2\times {\mathrm{149}}^1\times {\mathrm{440261}}^1$

素因数の和:440420

約数の個数: 12

約数和(自身を含む): 2047218300

約数和(自身を除く): 407246075

約数列:

[1, 5, 25, 149, 745, 3725, 440261, 2201305, 11006525, 65598889, 327994445, 1639972225]

約数ペア:

[(1, 1639972225), (5, 327994445), (25, 65598889), (149, 11006525), (745, 2201305), (3725, 440261)]