20880081

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{1117}}^1$

素因数の和:1221

約数の個数: 24

約数和(自身を含む): 31625984

約数和(自身を除く): 10745903

約数列:

[1, 3, 9, 31, 67, 93, 201, 279, 603, 1117, 2077, 3351, 6231, 10053, 18693, 34627, 74839, 103881, 224517, 311643, 673551, 2320009, 6960027, 20880081]

約数ペア:

[(1, 20880081), (3, 6960027), (9, 2320009), (31, 673551), (67, 311643), (93, 224517), (201, 103881), (279, 74839), (603, 34627), (1117, 18693), (2077, 10053), (3351, 6231)]