20416689

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{359}}^1$

素因数の和:525

約数の個数: 24

約数和(自身を含む): 30326400

約数和(自身を除く): 9909711

約数列:

[1, 3, 9, 71, 89, 213, 267, 359, 639, 801, 1077, 3231, 6319, 18957, 25489, 31951, 56871, 76467, 95853, 229401, 287559, 2268521, 6805563, 20416689]

約数ペア:

[(1, 20416689), (3, 6805563), (9, 2268521), (71, 287559), (89, 229401), (213, 95853), (267, 76467), (359, 56871), (639, 31951), (801, 25489), (1077, 18957), (3231, 6319)]