20054781

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1$

素因数の和:226

約数の個数: 48

約数和(自身を含む): 33022080

約数和(自身を除く): 12967299

約数列:

[1, 3, 9, 17, 23, 41, 51, 69, 123, 139, 153, 207, 369, 391, 417, 697, 943, 1173, 1251, 2091, 2363, 2829, 3197, 3519, 5699, 6273, 7089, 8487, 9591, 16031, 17097, 21267, 28773, 48093, 51291, 54349, 96883, 131077, 144279, 163047, 290649, 393231, 489141, 871947, 1179693, 2228309, 6684927, 20054781]

約数ペア:

[(1, 20054781), (3, 6684927), (9, 2228309), (17, 1179693), (23, 871947), (41, 489141), (51, 393231), (69, 290649), (123, 163047), (139, 144279), (153, 131077), (207, 96883), (369, 54349), (391, 51291), (417, 48093), (697, 28773), (943, 21267), (1173, 17097), (1251, 16031), (2091, 9591), (2363, 8487), (2829, 7089), (3197, 6273), (3519, 5699)]