19813925

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{2027}}^1$

素因数の和:2077

約数の個数: 24

約数和(自身を含む): 27158976

約数和(自身を除く): 7345051

約数列:

[1, 5, 17, 23, 25, 85, 115, 391, 425, 575, 1955, 2027, 9775, 10135, 34459, 46621, 50675, 172295, 233105, 792557, 861475, 1165525, 3962785, 19813925]

約数ペア:

[(1, 19813925), (5, 3962785), (17, 1165525), (23, 861475), (25, 792557), (85, 233105), (115, 172295), (391, 50675), (425, 46621), (575, 34459), (1955, 10135), (2027, 9775)]