20105781

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{20749}}^1$

素因数の和:20788

約数の個数: 16

約数和(自身を含む): 29880000

約数和(自身を除く): 9774219

約数列:

[1, 3, 17, 19, 51, 57, 323, 969, 20749, 62247, 352733, 394231, 1058199, 1182693, 6701927, 20105781]

約数ペア:

[(1, 20105781), (3, 6701927), (17, 1182693), (19, 1058199), (51, 394231), (57, 352733), (323, 62247), (969, 20749)]