20897785

素因数分解:

$5^1\times {\mathrm{37}}^2\times {\mathrm{43}}^1\times {\mathrm{71}}^1$

素因数の和:193

約数の個数: 24

約数和(自身を含む): 26744256

約数和(自身を除く): 5846471

約数列:

[1, 5, 37, 43, 71, 185, 215, 355, 1369, 1591, 2627, 3053, 6845, 7955, 13135, 15265, 58867, 97199, 112961, 294335, 485995, 564805, 4179557, 20897785]

約数ペア:

[(1, 20897785), (5, 4179557), (37, 564805), (43, 485995), (71, 294335), (185, 112961), (215, 97199), (355, 58867), (1369, 15265), (1591, 13135), (2627, 7955), (3053, 6845)]