21064901

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{7753}}^1$

素因数の和:7796

約数の個数: 16

約数和(自身を含む): 26053440

約数和(自身を除く): 4988539

約数列:

[1, 11, 13, 19, 143, 209, 247, 2717, 7753, 85283, 100789, 147307, 1108679, 1620377, 1914991, 21064901]

約数ペア:

[(1, 21064901), (11, 1914991), (13, 1620377), (19, 1108679), (143, 147307), (209, 100789), (247, 85283), (2717, 7753)]