18172287

素因数分解:

$3^2\times 7^2\times {\mathrm{89}}^1\times {\mathrm{463}}^1$

素因数の和:572

約数の個数: 36

約数和(自身を含む): 30944160

約数和(自身を除く): 12771873

約数列:

[1, 3, 7, 9, 21, 49, 63, 89, 147, 267, 441, 463, 623, 801, 1389, 1869, 3241, 4167, 4361, 5607, 9723, 13083, 22687, 29169, 39249, 41207, 68061, 123621, 204183, 288449, 370863, 865347, 2019143, 2596041, 6057429, 18172287]

約数ペア:

[(1, 18172287), (3, 6057429), (7, 2596041), (9, 2019143), (21, 865347), (49, 370863), (63, 288449), (89, 204183), (147, 123621), (267, 68061), (441, 41207), (463, 39249), (623, 29169), (801, 22687), (1389, 13083), (1869, 9723), (3241, 5607), (4167, 4361)]