18997823

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{59}}^1$

素因数の和:167

約数の個数: 32

約数和(自身を含む): 23224320

約数和(自身を除く): 4226497

約数列:

[1, 13, 17, 31, 47, 59, 221, 403, 527, 611, 767, 799, 1003, 1457, 1829, 2773, 6851, 10387, 13039, 18941, 23777, 24769, 31093, 36049, 47141, 85963, 321997, 404209, 612833, 1117519, 1461371, 18997823]

約数ペア:

[(1, 18997823), (13, 1461371), (17, 1117519), (31, 612833), (47, 404209), (59, 321997), (221, 85963), (403, 47141), (527, 36049), (611, 31093), (767, 24769), (799, 23777), (1003, 18941), (1457, 13039), (1829, 10387), (2773, 6851)]