21059391

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{6971}}^1$

素因数の和:7046

約数の個数: 16

約数和(自身を含む): 30119040

約数和(自身を除く): 9059649

約数列:

[1, 3, 19, 53, 57, 159, 1007, 3021, 6971, 20913, 132449, 369463, 397347, 1108389, 7019797, 21059391]

約数ペア:

[(1, 21059391), (3, 7019797), (19, 1108389), (53, 397347), (57, 369463), (159, 132449), (1007, 20913), (3021, 6971)]