19993953

素因数分解:

$3^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{11471}}^1$

素因数の和:11564

約数の個数: 16

約数和(自身を含む): 30836736

約数和(自身を除く): 10842783

約数列:

[1, 3, 7, 21, 83, 249, 581, 1743, 11471, 34413, 80297, 240891, 952093, 2856279, 6664651, 19993953]

約数ペア:

[(1, 19993953), (3, 6664651), (7, 2856279), (21, 952093), (83, 240891), (249, 80297), (581, 34413), (1743, 11471)]