18381735

素因数分解:

$3^7\times 5^1\times {\mathrm{41}}^2$

素因数の和:108

約数の個数: 48

約数和(自身を含む): 33908640

約数和(自身を除く): 15526905

約数列:

[1, 3, 5, 9, 15, 27, 41, 45, 81, 123, 135, 205, 243, 369, 405, 615, 729, 1107, 1215, 1681, 1845, 2187, 3321, 3645, 5043, 5535, 8405, 9963, 10935, 15129, 16605, 25215, 29889, 45387, 49815, 75645, 89667, 136161, 149445, 226935, 408483, 448335, 680805, 1225449, 2042415, 3676347, 6127245, 18381735]

約数ペア:

[(1, 18381735), (3, 6127245), (5, 3676347), (9, 2042415), (15, 1225449), (27, 680805), (41, 448335), (45, 408483), (81, 226935), (123, 149445), (135, 136161), (205, 89667), (243, 75645), (369, 49815), (405, 45387), (615, 29889), (729, 25215), (1107, 16605), (1215, 15129), (1681, 10935), (1845, 9963), (2187, 8405), (3321, 5535), (3645, 5043)]