19870266

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{254747}}^1$

素因数の和:254765

約数の個数: 16

約数和(自身を含む): 42797664

約数和(自身を除く): 22927398

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 254747, 509494, 764241, 1528482, 3311711, 6623422, 9935133, 19870266]

約数ペア:

[(1, 19870266), (2, 9935133), (3, 6623422), (6, 3311711), (13, 1528482), (26, 764241), (39, 509494), (78, 254747)]