19905223

素因数分解:

${\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{1427}}^1$

素因数の和:1506

約数の個数: 16

約数和(自身を含む): 22790880

約数和(自身を除く): 2885657

約数列:

[1, 13, 29, 37, 377, 481, 1073, 1427, 13949, 18551, 41383, 52799, 537979, 686387, 1531171, 19905223]

約数ペア:

[(1, 19905223), (13, 1531171), (29, 686387), (37, 537979), (377, 52799), (481, 41383), (1073, 18551), (1427, 13949)]