18490743

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{1523}}^1$

素因数の和:1619

約数の個数: 24

約数和(自身を含む): 28529280

約数和(自身を除く): 10038537

約数列:

[1, 3, 9, 19, 57, 71, 171, 213, 639, 1349, 1523, 4047, 4569, 12141, 13707, 28937, 86811, 108133, 260433, 324399, 973197, 2054527, 6163581, 18490743]

約数ペア:

[(1, 18490743), (3, 6163581), (9, 2054527), (19, 973197), (57, 324399), (71, 260433), (171, 108133), (213, 86811), (639, 28937), (1349, 13707), (1523, 12141), (4047, 4569)]