20021859

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{331}}^1$

素因数の和:408

約数の個数: 48

約数和(自身を含む): 34804224

約数和(自身を除く): 14782365

約数列:

[1, 3, 9, 11, 13, 33, 39, 47, 99, 117, 141, 143, 331, 423, 429, 517, 611, 993, 1287, 1551, 1833, 2979, 3641, 4303, 4653, 5499, 6721, 10923, 12909, 15557, 20163, 32769, 38727, 46671, 47333, 60489, 140013, 141999, 171127, 202241, 425997, 513381, 606723, 1540143, 1820169, 2224651, 6673953, 20021859]

約数ペア:

[(1, 20021859), (3, 6673953), (9, 2224651), (11, 1820169), (13, 1540143), (33, 606723), (39, 513381), (47, 425997), (99, 202241), (117, 171127), (141, 141999), (143, 140013), (331, 60489), (423, 47333), (429, 46671), (517, 38727), (611, 32769), (993, 20163), (1287, 15557), (1551, 12909), (1833, 10923), (2979, 6721), (3641, 5499), (4303, 4653)]