19988917

素因数分解:

${\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{1433}}^1$

素因数の和:1512

約数の個数: 16

約数和(自身を含む): 22886640

約数和(自身を除く): 2897723

約数列:

[1, 13, 29, 37, 377, 481, 1073, 1433, 13949, 18629, 41557, 53021, 540241, 689273, 1537609, 19988917]

約数ペア:

[(1, 19988917), (13, 1537609), (29, 689273), (37, 540241), (377, 53021), (481, 41557), (1073, 18629), (1433, 13949)]