19887842

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{5503}}^1$

素因数の和:5657

約数の個数: 16

約数和(自身を含む): 32363520

約数和(自身を除く): 12475678

約数列:

[1, 2, 13, 26, 139, 278, 1807, 3614, 5503, 11006, 71539, 143078, 764917, 1529834, 9943921, 19887842]

約数ペア:

[(1, 19887842), (2, 9943921), (13, 1529834), (26, 764917), (139, 143078), (278, 71539), (1807, 11006), (3614, 5503)]