205421217

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{239}}^1\times {\mathrm{887}}^1$

素因数の和:1165

約数の個数: 32

約数和(自身を含む): 306892800

約数和(自身を除く): 101471583

約数列:

[1, 3, 17, 19, 51, 57, 239, 323, 717, 887, 969, 2661, 4063, 4541, 12189, 13623, 15079, 16853, 45237, 50559, 77197, 211993, 231591, 286501, 635979, 859503, 3603881, 4027867, 10811643, 12083601, 68473739, 205421217]

約数ペア:

[(1, 205421217), (3, 68473739), (17, 12083601), (19, 10811643), (51, 4027867), (57, 3603881), (239, 859503), (323, 635979), (717, 286501), (887, 231591), (969, 211993), (2661, 77197), (4063, 50559), (4541, 45237), (12189, 16853), (13623, 15079)]