19987505999

素因数分解:

${\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1\times {\mathrm{127}}^1\times {\mathrm{1291}}^1$

素因数の和:1607

約数の個数: 32

約数和(自身を含む): 21861384192

約数和(自身を除く): 1873878193

約数列:

[1, 17, 71, 101, 127, 1207, 1291, 1717, 2159, 7171, 9017, 12827, 21947, 91661, 121907, 130391, 153289, 163957, 218059, 910717, 1558237, 2216647, 2787269, 9257761, 11640947, 15482189, 16559657, 157381937, 197896099, 281514169, 1175735647, 19987505999]

約数ペア:

[(1, 19987505999), (17, 1175735647), (71, 281514169), (101, 197896099), (127, 157381937), (1207, 16559657), (1291, 15482189), (1717, 11640947), (2159, 9257761), (7171, 2787269), (9017, 2216647), (12827, 1558237), (21947, 910717), (91661, 218059), (121907, 163957), (130391, 153289)]