19976781

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{16361}}^1$

素因数の和:16412

約数の個数: 16

約数和(自身を含む): 29844288

約数和(自身を除く): 9867507

約数列:

[1, 3, 11, 33, 37, 111, 407, 1221, 16361, 49083, 179971, 539913, 605357, 1816071, 6658927, 19976781]

約数ペア:

[(1, 19976781), (3, 6658927), (11, 1816071), (33, 605357), (37, 539913), (111, 179971), (407, 49083), (1221, 16361)]