21220719

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{509}}^1\times {\mathrm{1069}}^1$

素因数の和:1594

約数の個数: 16

約数和(自身を含む): 30559200

約数和(自身を除く): 9338481

約数列:

[1, 3, 13, 39, 509, 1069, 1527, 3207, 6617, 13897, 19851, 41691, 544121, 1632363, 7073573, 21220719]

約数ペア:

[(1, 21220719), (3, 7073573), (13, 1632363), (39, 544121), (509, 41691), (1069, 19851), (1527, 13897), (3207, 6617)]