20881269

素因数分解:

$3^2\times {\mathrm{89}}^1\times {\mathrm{131}}^1\times {\mathrm{199}}^1$

素因数の和:425

約数の個数: 24

約数和(自身を含む): 30888000

約数和(自身を除く): 10006731

約数列:

[1, 3, 9, 89, 131, 199, 267, 393, 597, 801, 1179, 1791, 11659, 17711, 26069, 34977, 53133, 78207, 104931, 159399, 234621, 2320141, 6960423, 20881269]

約数ペア:

[(1, 20881269), (3, 6960423), (9, 2320141), (89, 234621), (131, 159399), (199, 104931), (267, 78207), (393, 53133), (597, 34977), (801, 26069), (1179, 17711), (1791, 11659)]