19903176

素因数分解:

$2^3\times 3^2\times {\mathrm{491}}^1\times {\mathrm{563}}^1$

素因数の和:1066

約数の個数: 48

約数和(自身を含む): 54110160

約数和(自身を除く): 34206984

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 491, 563, 982, 1126, 1473, 1689, 1964, 2252, 2946, 3378, 3928, 4419, 4504, 5067, 5892, 6756, 8838, 10134, 11784, 13512, 17676, 20268, 35352, 40536, 276433, 552866, 829299, 1105732, 1658598, 2211464, 2487897, 3317196, 4975794, 6634392, 9951588, 19903176]

約数ペア:

[(1, 19903176), (2, 9951588), (3, 6634392), (4, 4975794), (6, 3317196), (8, 2487897), (9, 2211464), (12, 1658598), (18, 1105732), (24, 829299), (36, 552866), (72, 276433), (491, 40536), (563, 35352), (982, 20268), (1126, 17676), (1473, 13512), (1689, 11784), (1964, 10134), (2252, 8838), (2946, 6756), (3378, 5892), (3928, 5067), (4419, 4504)]