19711588

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{281}}^1$

素因数の和:388

約数の個数: 48

約数和(自身を含む): 39795840

約数和(自身を除く): 20084252

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 71, 76, 142, 247, 281, 284, 494, 562, 923, 988, 1124, 1349, 1846, 2698, 3653, 3692, 5339, 5396, 7306, 10678, 14612, 17537, 19951, 21356, 35074, 39902, 69407, 70148, 79804, 138814, 259363, 277628, 379069, 518726, 758138, 1037452, 1516276, 4927897, 9855794, 19711588]

約数ペア:

[(1, 19711588), (2, 9855794), (4, 4927897), (13, 1516276), (19, 1037452), (26, 758138), (38, 518726), (52, 379069), (71, 277628), (76, 259363), (142, 138814), (247, 79804), (281, 70148), (284, 69407), (494, 39902), (562, 35074), (923, 21356), (988, 19951), (1124, 17537), (1349, 14612), (1846, 10678), (2698, 7306), (3653, 5396), (3692, 5339)]