19947759

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{5273}}^1$

素因数の和:5386

約数の個数: 16

約数和(自身を含む): 28943712

約数和(自身を除く): 8995953

約数列:

[1, 3, 13, 39, 97, 291, 1261, 3783, 5273, 15819, 68549, 205647, 511481, 1534443, 6649253, 19947759]

約数ペア:

[(1, 19947759), (3, 6649253), (13, 1534443), (39, 511481), (97, 205647), (291, 68549), (1261, 15819), (3783, 5273)]