21256619613

素因数分解:

$3^1\times {\mathrm{17}}^2\times {\mathrm{43}}^1\times {\mathrm{570173}}^1$

素因数の和:570253

約数の個数: 24

約数和(自身を含む): 30807641568

約数和(自身を除く): 9551021955

約数列:

[1, 3, 17, 43, 51, 129, 289, 731, 867, 2193, 12427, 37281, 570173, 1710519, 9692941, 24517439, 29078823, 73552317, 164779997, 416796463, 494339991, 1250389389, 7085539871, 21256619613]

約数ペア:

[(1, 21256619613), (3, 7085539871), (17, 1250389389), (43, 494339991), (51, 416796463), (129, 164779997), (289, 73552317), (731, 29078823), (867, 24517439), (2193, 9692941), (12427, 1710519), (37281, 570173)]