20205819

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{103}}^1\times {\mathrm{307}}^1$

素因数の和:487

約数の個数: 24

約数和(自身を含む): 29981952

約数和(自身を除く): 9776133

約数列:

[1, 3, 9, 71, 103, 213, 307, 309, 639, 921, 927, 2763, 7313, 21797, 21939, 31621, 65391, 65817, 94863, 196173, 284589, 2245091, 6735273, 20205819]

約数ペア:

[(1, 20205819), (3, 6735273), (9, 2245091), (71, 284589), (103, 196173), (213, 94863), (307, 65817), (309, 65391), (639, 31621), (921, 21939), (927, 21797), (2763, 7313)]