20810425

素因数分解:

$5^2\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{199}}^1$

素因数の和:345

約数の個数: 24

約数和(自身を含む): 26784000

約数和(自身を除く): 5973575

約数列:

[1, 5, 25, 47, 89, 199, 235, 445, 995, 1175, 2225, 4183, 4975, 9353, 17711, 20915, 46765, 88555, 104575, 233825, 442775, 832417, 4162085, 20810425]

約数ペア:

[(1, 20810425), (5, 4162085), (25, 832417), (47, 442775), (89, 233825), (199, 104575), (235, 88555), (445, 46765), (995, 20915), (1175, 17711), (2225, 9353), (4183, 4975)]