81015768

素因数分解:

$2^3\times 3^3\times {\mathrm{157}}^1\times {\mathrm{2389}}^1$

素因数の和:2561

約数の個数: 64

約数和(自身を含む): 226572000

約数和(自身を除く): 145556232

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 108, 157, 216, 314, 471, 628, 942, 1256, 1413, 1884, 2389, 2826, 3768, 4239, 4778, 5652, 7167, 8478, 9556, 11304, 14334, 16956, 19112, 21501, 28668, 33912, 43002, 57336, 64503, 86004, 129006, 172008, 258012, 375073, 516024, 750146, 1125219, 1500292, 2250438, 3000584, 3375657, 4500876, 6751314, 9001752, 10126971, 13502628, 20253942, 27005256, 40507884, 81015768]

約数ペア:

[(1, 81015768), (2, 40507884), (3, 27005256), (4, 20253942), (6, 13502628), (8, 10126971), (9, 9001752), (12, 6751314), (18, 4500876), (24, 3375657), (27, 3000584), (36, 2250438), (54, 1500292), (72, 1125219), (108, 750146), (157, 516024), (216, 375073), (314, 258012), (471, 172008), (628, 129006), (942, 86004), (1256, 64503), (1413, 57336), (1884, 43002), (2389, 33912), (2826, 28668), (3768, 21501), (4239, 19112), (4778, 16956), (5652, 14334), (7167, 11304), (8478, 9556)]