20473965

素因数分解:

$3^6\times 5^1\times {\mathrm{41}}^1\times {\mathrm{137}}^1$

素因数の和:201

約数の個数: 56

約数和(自身を含む): 38010168

約数和(自身を除く): 17536203

約数列:

[1, 3, 5, 9, 15, 27, 41, 45, 81, 123, 135, 137, 205, 243, 369, 405, 411, 615, 685, 729, 1107, 1215, 1233, 1845, 2055, 3321, 3645, 3699, 5535, 5617, 6165, 9963, 11097, 16605, 16851, 18495, 28085, 29889, 33291, 49815, 50553, 55485, 84255, 99873, 149445, 151659, 166455, 252765, 454977, 499365, 758295, 1364931, 2274885, 4094793, 6824655, 20473965]

約数ペア:

[(1, 20473965), (3, 6824655), (5, 4094793), (9, 2274885), (15, 1364931), (27, 758295), (41, 499365), (45, 454977), (81, 252765), (123, 166455), (135, 151659), (137, 149445), (205, 99873), (243, 84255), (369, 55485), (405, 50553), (411, 49815), (615, 33291), (685, 29889), (729, 28085), (1107, 18495), (1215, 16851), (1233, 16605), (1845, 11097), (2055, 9963), (3321, 6165), (3645, 5617), (3699, 5535)]