21137355

素因数分解:

$3^7\times 5^1\times {\mathrm{1933}}^1$

素因数の和:1959

約数の個数: 32

約数和(自身を含む): 38061120

約数和(自身を除く): 16923765

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 729, 1215, 1933, 2187, 3645, 5799, 9665, 10935, 17397, 28995, 52191, 86985, 156573, 260955, 469719, 782865, 1409157, 2348595, 4227471, 7045785, 21137355]

約数ペア:

[(1, 21137355), (3, 7045785), (5, 4227471), (9, 2348595), (15, 1409157), (27, 782865), (45, 469719), (81, 260955), (135, 156573), (243, 86985), (405, 52191), (729, 28995), (1215, 17397), (1933, 10935), (2187, 9665), (3645, 5799)]