20983923

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{41}}^2\times {\mathrm{73}}^1$

素因数の和:180

約数の個数: 36

約数和(自身を含む): 33150520

約数和(自身を除く): 12166597

約数列:

[1, 3, 9, 19, 41, 57, 73, 123, 171, 219, 369, 657, 779, 1387, 1681, 2337, 2993, 4161, 5043, 7011, 8979, 12483, 15129, 26937, 31939, 56867, 95817, 122713, 170601, 287451, 368139, 511803, 1104417, 2331547, 6994641, 20983923]

約数ペア:

[(1, 20983923), (3, 6994641), (9, 2331547), (19, 1104417), (41, 511803), (57, 368139), (73, 287451), (123, 170601), (171, 122713), (219, 95817), (369, 56867), (657, 31939), (779, 26937), (1387, 15129), (1681, 12483), (2337, 8979), (2993, 7011), (4161, 5043)]