18991504

素因数分解:

$2^4\times 7^1\times {\mathrm{169567}}^1$

素因数の和:169582

約数の個数: 20

約数和(自身を含む): 42052864

約数和(自身を除く): 23061360

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 169567, 339134, 678268, 1186969, 1356536, 2373938, 2713072, 4747876, 9495752, 18991504]

約数ペア:

[(1, 18991504), (2, 9495752), (4, 4747876), (7, 2713072), (8, 2373938), (14, 1356536), (16, 1186969), (28, 678268), (56, 339134), (112, 169567)]