19919061

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{127}}^1\times {\mathrm{157}}^1$

素因数の和:330

約数の個数: 32

約数和(自身を含む): 30740480

約数和(自身を除く): 10821419

約数列:

[1, 3, 9, 27, 37, 111, 127, 157, 333, 381, 471, 999, 1143, 1413, 3429, 4239, 4699, 5809, 14097, 17427, 19939, 42291, 52281, 59817, 126873, 156843, 179451, 538353, 737743, 2213229, 6639687, 19919061]

約数ペア:

[(1, 19919061), (3, 6639687), (9, 2213229), (27, 737743), (37, 538353), (111, 179451), (127, 156843), (157, 126873), (333, 59817), (381, 52281), (471, 42291), (999, 19939), (1143, 17427), (1413, 14097), (3429, 5809), (4239, 4699)]