21042957

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{1867}}^1$

素因数の和:1917

約数の個数: 24

約数和(自身を含む): 32114656

約数和(自身を除く): 11071699

約数列:

[1, 3, 13, 17, 39, 51, 221, 289, 663, 867, 1867, 3757, 5601, 11271, 24271, 31739, 72813, 95217, 412607, 539563, 1237821, 1618689, 7014319, 21042957]

約数ペア:

[(1, 21042957), (3, 7014319), (13, 1618689), (17, 1237821), (39, 539563), (51, 412607), (221, 95217), (289, 72813), (663, 31739), (867, 24271), (1867, 11271), (3757, 5601)]