21713181

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{54419}}^1$

素因数の和:54448

約数の個数: 16

約数和(自身を含む): 34828800

約数和(自身を除く): 13115619

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 54419, 163257, 380933, 1033961, 1142799, 3101883, 7237727, 21713181]

約数ペア:

[(1, 21713181), (3, 7237727), (7, 3101883), (19, 1142799), (21, 1033961), (57, 380933), (133, 163257), (399, 54419)]