21062019

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{10463}}^1$

素因数の和:10538

約数の個数: 16

約数和(自身を含む): 31140864

約数和(自身を除く): 10078845

約数列:

[1, 3, 11, 33, 61, 183, 671, 2013, 10463, 31389, 115093, 345279, 638243, 1914729, 7020673, 21062019]

約数ペア:

[(1, 21062019), (3, 7020673), (11, 1914729), (33, 638243), (61, 345279), (183, 115093), (671, 31389), (2013, 10463)]