20772855

素因数分解:

$3^6\times 5^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1$

素因数の和:203

約数の個数: 56

約数和(自身を含む): 38561040

約数和(自身を除く): 17788185

約数列:

[1, 3, 5, 9, 15, 27, 41, 45, 81, 123, 135, 139, 205, 243, 369, 405, 417, 615, 695, 729, 1107, 1215, 1251, 1845, 2085, 3321, 3645, 3753, 5535, 5699, 6255, 9963, 11259, 16605, 17097, 18765, 28495, 29889, 33777, 49815, 51291, 56295, 85485, 101331, 149445, 153873, 168885, 256455, 461619, 506655, 769365, 1384857, 2308095, 4154571, 6924285, 20772855]

約数ペア:

[(1, 20772855), (3, 6924285), (5, 4154571), (9, 2308095), (15, 1384857), (27, 769365), (41, 506655), (45, 461619), (81, 256455), (123, 168885), (135, 153873), (139, 149445), (205, 101331), (243, 85485), (369, 56295), (405, 51291), (417, 49815), (615, 33777), (695, 29889), (729, 28495), (1107, 18765), (1215, 17097), (1251, 16605), (1845, 11259), (2085, 9963), (3321, 6255), (3645, 5699), (3753, 5535)]