21254085

素因数分解:

$3^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{3719}}^1$

素因数の和:3857

約数の個数: 24

約数和(自身を含む): 37140480

約数和(自身を除く): 15886395

約数列:

[1, 3, 5, 9, 15, 45, 127, 381, 635, 1143, 1905, 3719, 5715, 11157, 18595, 33471, 55785, 167355, 472313, 1416939, 2361565, 4250817, 7084695, 21254085]

約数ペア:

[(1, 21254085), (3, 7084695), (5, 4250817), (9, 2361565), (15, 1416939), (45, 472313), (127, 167355), (381, 55785), (635, 33471), (1143, 18595), (1905, 11157), (3719, 5715)]