19982440

素因数分解:

$2^3\times 5^1\times {\mathrm{607}}^1\times {\mathrm{823}}^1$

素因数の和:1441

約数の個数: 32

約数和(自身を含む): 45089280

約数和(自身を除く): 25106840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 607, 823, 1214, 1646, 2428, 3035, 3292, 4115, 4856, 6070, 6584, 8230, 12140, 16460, 24280, 32920, 499561, 999122, 1998244, 2497805, 3996488, 4995610, 9991220, 19982440]

約数ペア:

[(1, 19982440), (2, 9991220), (4, 4995610), (5, 3996488), (8, 2497805), (10, 1998244), (20, 999122), (40, 499561), (607, 32920), (823, 24280), (1214, 16460), (1646, 12140), (2428, 8230), (3035, 6584), (3292, 6070), (4115, 4856)]