19131519

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{3203}}^1$

素因数の和:3398

約数の個数: 16

約数和(自身を含む): 27990144

約数和(自身を除く): 8858625

約数列:

[1, 3, 11, 33, 181, 543, 1991, 3203, 5973, 9609, 35233, 105699, 579743, 1739229, 6377173, 19131519]

約数ペア:

[(1, 19131519), (3, 6377173), (11, 1739229), (33, 579743), (181, 105699), (543, 35233), (1991, 9609), (3203, 5973)]