21052713

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{12037}}^1$

素因数の和:12104

約数の個数: 16

約数和(自身を含む): 31202496

約数和(自身を除く): 10149783

約数列:

[1, 3, 11, 33, 53, 159, 583, 1749, 12037, 36111, 132407, 397221, 637961, 1913883, 7017571, 21052713]

約数ペア:

[(1, 21052713), (3, 7017571), (11, 1913883), (33, 637961), (53, 397221), (159, 132407), (583, 36111), (1749, 12037)]