19639270

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{280561}}^1$

素因数の和:280575

約数の個数: 16

約数和(自身を含む): 40400928

約数和(自身を除く): 20761658

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 280561, 561122, 1402805, 1963927, 2805610, 3927854, 9819635, 19639270]

約数ペア:

[(1, 19639270), (2, 9819635), (5, 3927854), (7, 2805610), (10, 1963927), (14, 1402805), (35, 561122), (70, 280561)]