20291151

素因数分解:

$3^1\times {\mathrm{67}}^1\times {\mathrm{157}}^1\times {\mathrm{643}}^1$

素因数の和:870

約数の個数: 16

約数和(自身を含む): 27676544

約数和(自身を除く): 7385393

約数列:

[1, 3, 67, 157, 201, 471, 643, 1929, 10519, 31557, 43081, 100951, 129243, 302853, 6763717, 20291151]

約数ペア:

[(1, 20291151), (3, 6763717), (67, 302853), (157, 129243), (201, 100951), (471, 43081), (643, 31557), (1929, 10519)]