21209319

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{2069}}^1$

素因数の和:2159

約数の個数: 24

約数和(自身を含む): 32937840

約数和(自身を除く): 11728521

約数列:

[1, 3, 9, 17, 51, 67, 153, 201, 603, 1139, 2069, 3417, 6207, 10251, 18621, 35173, 105519, 138623, 316557, 415869, 1247607, 2356591, 7069773, 21209319]

約数ペア:

[(1, 21209319), (3, 7069773), (9, 2356591), (17, 1247607), (51, 415869), (67, 316557), (153, 138623), (201, 105519), (603, 35173), (1139, 18621), (2069, 10251), (3417, 6207)]