28720647

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{3169}}^1$

素因数の和:3247

約数の個数: 24

約数和(自身を含む): 44506800

約数和(自身を除く): 15786153

約数列:

[1, 3, 9, 19, 53, 57, 159, 171, 477, 1007, 3021, 3169, 9063, 9507, 28521, 60211, 167957, 180633, 503871, 541899, 1511613, 3191183, 9573549, 28720647]

約数ペア:

[(1, 28720647), (3, 9573549), (9, 3191183), (19, 1511613), (53, 541899), (57, 503871), (159, 180633), (171, 167957), (477, 60211), (1007, 28521), (3021, 9507), (3169, 9063)]