21305517

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{12889}}^1$

素因数の和:12940

約数の個数: 16

約数和(自身を含む): 30936000

約数和(自身を除く): 9630483

約数列:

[1, 3, 19, 29, 57, 87, 551, 1653, 12889, 38667, 244891, 373781, 734673, 1121343, 7101839, 21305517]

約数ペア:

[(1, 21305517), (3, 7101839), (19, 1121343), (29, 734673), (57, 373781), (87, 244891), (551, 38667), (1653, 12889)]