19899737

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{67}}^2$

素因数の和:189

約数の個数: 24

約数和(自身を含む): 24498432

約数和(自身を除く): 4598695

約数列:

[1, 11, 13, 31, 67, 143, 341, 403, 737, 871, 2077, 4433, 4489, 9581, 22847, 27001, 49379, 58357, 139159, 297011, 641927, 1530749, 1809067, 19899737]

約数ペア:

[(1, 19899737), (11, 1809067), (13, 1530749), (31, 641927), (67, 297011), (143, 139159), (341, 58357), (403, 49379), (737, 27001), (871, 22847), (2077, 9581), (4433, 4489)]