19900309

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{317}}^1\times {\mathrm{439}}^1$

素因数の和:780

約数の個数: 16

約数和(自身を含む): 23506560

約数和(自身を除く): 3606251

約数列:

[1, 11, 13, 143, 317, 439, 3487, 4121, 4829, 5707, 45331, 62777, 139163, 1530793, 1809119, 19900309]

約数ペア:

[(1, 19900309), (11, 1809119), (13, 1530793), (143, 139163), (317, 62777), (439, 45331), (3487, 5707), (4121, 4829)]