20197955

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{293}}^1\times {\mathrm{811}}^1$

素因数の和:1126

約数の個数: 16

約数和(自身を含む): 25782624

約数和(自身を除く): 5584669

約数列:

[1, 5, 17, 85, 293, 811, 1465, 4055, 4981, 13787, 24905, 68935, 237623, 1188115, 4039591, 20197955]

約数ペア:

[(1, 20197955), (5, 4039591), (17, 1188115), (85, 237623), (293, 68935), (811, 24905), (1465, 13787), (4055, 4981)]