21159897

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{743}}^1\times {\mathrm{863}}^1$

素因数の和:1620

約数の個数: 16

約数和(自身を含む): 30855168

約数和(自身を除く): 9695271

約数列:

[1, 3, 11, 33, 743, 863, 2229, 2589, 8173, 9493, 24519, 28479, 641209, 1923627, 7053299, 21159897]

約数ペア:

[(1, 21159897), (3, 7053299), (11, 1923627), (33, 641209), (743, 28479), (863, 24519), (2229, 9493), (2589, 8173)]