20288763

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{223}}^1\times {\mathrm{919}}^1$

素因数の和:1159

約数の個数: 24

約数和(自身を含む): 32148480

約数和(自身を除く): 11859717

約数列:

[1, 3, 9, 11, 33, 99, 223, 669, 919, 2007, 2453, 2757, 7359, 8271, 10109, 22077, 30327, 90981, 204937, 614811, 1844433, 2254307, 6762921, 20288763]

約数ペア:

[(1, 20288763), (3, 6762921), (9, 2254307), (11, 1844433), (33, 614811), (99, 204937), (223, 90981), (669, 30327), (919, 22077), (2007, 10109), (2453, 8271), (2757, 7359)]