20945853

素因数分解:

$3^2\times {\mathrm{17}}^2\times {\mathrm{8053}}^1$

素因数の和:8093

約数の個数: 18

約数和(自身を含む): 32143514

約数和(自身を除く): 11197661

約数列:

[1, 3, 9, 17, 51, 153, 289, 867, 2601, 8053, 24159, 72477, 136901, 410703, 1232109, 2327317, 6981951, 20945853]

約数ペア:

[(1, 20945853), (3, 6981951), (9, 2327317), (17, 1232109), (51, 410703), (153, 136901), (289, 72477), (867, 24159), (2601, 8053)]