18391329

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{197}}^1$

素因数の和:278

約数の個数: 48

約数和(自身を含む): 31135104

約数和(自身を除く): 12743775

約数列:

[1, 3, 9, 11, 23, 33, 41, 69, 99, 123, 197, 207, 253, 369, 451, 591, 759, 943, 1353, 1773, 2167, 2277, 2829, 4059, 4531, 6501, 8077, 8487, 10373, 13593, 19503, 24231, 31119, 40779, 49841, 72693, 88847, 93357, 149523, 185771, 266541, 448569, 557313, 799623, 1671939, 2043481, 6130443, 18391329]

約数ペア:

[(1, 18391329), (3, 6130443), (9, 2043481), (11, 1671939), (23, 799623), (33, 557313), (41, 448569), (69, 266541), (99, 185771), (123, 149523), (197, 93357), (207, 88847), (253, 72693), (369, 49841), (451, 40779), (591, 31119), (759, 24231), (943, 19503), (1353, 13593), (1773, 10373), (2167, 8487), (2277, 8077), (2829, 6501), (4059, 4531)]