21687189

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{22381}}^1$

素因数の和:22420

約数の個数: 16

約数和(自身を含む): 32230080

約数和(自身を除く): 10542891

約数列:

[1, 3, 17, 19, 51, 57, 323, 969, 22381, 67143, 380477, 425239, 1141431, 1275717, 7229063, 21687189]

約数ペア:

[(1, 21687189), (3, 7229063), (17, 1275717), (19, 1141431), (51, 425239), (57, 380477), (323, 67143), (969, 22381)]