20409912

素因数分解:

$2^3\times 3^2\times {\mathrm{257}}^1\times {\mathrm{1103}}^1$

素因数の和:1372

約数の個数: 48

約数和(自身を含む): 55542240

約数和(自身を除く): 35132328

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 257, 514, 771, 1028, 1103, 1542, 2056, 2206, 2313, 3084, 3309, 4412, 4626, 6168, 6618, 8824, 9252, 9927, 13236, 18504, 19854, 26472, 39708, 79416, 283471, 566942, 850413, 1133884, 1700826, 2267768, 2551239, 3401652, 5102478, 6803304, 10204956, 20409912]

約数ペア:

[(1, 20409912), (2, 10204956), (3, 6803304), (4, 5102478), (6, 3401652), (8, 2551239), (9, 2267768), (12, 1700826), (18, 1133884), (24, 850413), (36, 566942), (72, 283471), (257, 79416), (514, 39708), (771, 26472), (1028, 19854), (1103, 18504), (1542, 13236), (2056, 9927), (2206, 9252), (2313, 8824), (3084, 6618), (3309, 6168), (4412, 4626)]