20998055

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{8731}}^1$

素因数の和:8786

約数の個数: 16

約数和(自身を含む): 27872544

約数和(自身を除く): 6874489

約数列:

[1, 5, 13, 37, 65, 185, 481, 2405, 8731, 43655, 113503, 323047, 567515, 1615235, 4199611, 20998055]

約数ペア:

[(1, 20998055), (5, 4199611), (13, 1615235), (37, 567515), (65, 323047), (185, 113503), (481, 43655), (2405, 8731)]