19729857

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{30307}}^1$

素因数の和:30348

約数の個数: 16

約数和(自身を含む): 31035392

約数和(自身を除く): 11305535

約数列:

[1, 3, 7, 21, 31, 93, 217, 651, 30307, 90921, 212149, 636447, 939517, 2818551, 6576619, 19729857]

約数ペア:

[(1, 19729857), (3, 6576619), (7, 2818551), (21, 939517), (31, 636447), (93, 212149), (217, 90921), (651, 30307)]