19947551

素因数分解:

${\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{113}}^1\times {\mathrm{367}}^1$

素因数の和:530

約数の個数: 16

約数和(自身を含む): 22318464

約数和(自身を除く): 2370913

約数列:

[1, 13, 37, 113, 367, 481, 1469, 4181, 4771, 13579, 41471, 54353, 176527, 539123, 1534427, 19947551]

約数ペア:

[(1, 19947551), (13, 1534427), (37, 539123), (113, 176527), (367, 54353), (481, 41471), (1469, 13579), (4181, 4771)]