21670389

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{577}}^1$

素因数の和:706

約数の個数: 32

約数和(自身を含む): 34957440

約数和(自身を除く): 13287051

約数列:

[1, 3, 9, 13, 27, 39, 107, 117, 321, 351, 577, 963, 1391, 1731, 2889, 4173, 5193, 7501, 12519, 15579, 22503, 37557, 61739, 67509, 185217, 202527, 555651, 802607, 1666953, 2407821, 7223463, 21670389]

約数ペア:

[(1, 21670389), (3, 7223463), (9, 2407821), (13, 1666953), (27, 802607), (39, 555651), (107, 202527), (117, 185217), (321, 67509), (351, 61739), (577, 37557), (963, 22503), (1391, 15579), (1731, 12519), (2889, 7501), (4173, 5193)]