21920073

素因数分解:

$3^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{8219}}^1$

素因数の和:8356

約数の個数: 16

約数和(自身を含む): 33669120

約数和(自身を除く): 11749047

約数列:

[1, 3, 7, 21, 127, 381, 889, 2667, 8219, 24657, 57533, 172599, 1043813, 3131439, 7306691, 21920073]

約数ペア:

[(1, 21920073), (3, 7306691), (7, 3131439), (21, 1043813), (127, 172599), (381, 57533), (889, 24657), (2667, 8219)]