20712225

素因数分解:

$3^1\times 5^2\times {\mathrm{157}}^1\times {\mathrm{1759}}^1$

素因数の和:1929

約数の個数: 24

約数和(自身を含む): 34481920

約数和(自身を除く): 13769695

約数列:

[1, 3, 5, 15, 25, 75, 157, 471, 785, 1759, 2355, 3925, 5277, 8795, 11775, 26385, 43975, 131925, 276163, 828489, 1380815, 4142445, 6904075, 20712225]

約数ペア:

[(1, 20712225), (3, 6904075), (5, 4142445), (15, 1380815), (25, 828489), (75, 276163), (157, 131925), (471, 43975), (785, 26385), (1759, 11775), (2355, 8795), (3925, 5277)]