21000831993

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{193}}^1\times {\mathrm{636331}}^1$

素因数の和:636549

約数の個数: 24

約数和(自身を含む): 32096586080

約数和(自身を除く): 11095754087

約数列:

[1, 3, 9, 19, 57, 171, 193, 579, 1737, 3667, 11001, 33003, 636331, 1908993, 5726979, 12090289, 36270867, 108812601, 122811883, 368435649, 1105306947, 2333425777, 7000277331, 21000831993]

約数ペア:

[(1, 21000831993), (3, 7000277331), (9, 2333425777), (19, 1105306947), (57, 368435649), (171, 122811883), (193, 108812601), (579, 36270867), (1737, 12090289), (3667, 5726979), (11001, 1908993), (33003, 636331)]