21035919

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{6991}}^1$

素因数の和:7070

約数の個数: 16

約数和(自身を含む): 30205440

約数和(自身を除く): 9169521

約数列:

[1, 3, 17, 51, 59, 177, 1003, 3009, 6991, 20973, 118847, 356541, 412469, 1237407, 7011973, 21035919]

約数ペア:

[(1, 21035919), (3, 7011973), (17, 1237407), (51, 412469), (59, 356541), (177, 118847), (1003, 20973), (3009, 6991)]