19994508

素因数分解:

$2^2\times 3^2\times {\mathrm{397}}^1\times {\mathrm{1399}}^1$

素因数の和:1806

約数の個数: 36

約数和(自身を含む): 50705200

約数和(自身を除く): 30710692

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 397, 794, 1191, 1399, 1588, 2382, 2798, 3573, 4197, 4764, 5596, 7146, 8394, 12591, 14292, 16788, 25182, 50364, 555403, 1110806, 1666209, 2221612, 3332418, 4998627, 6664836, 9997254, 19994508]

約数ペア:

[(1, 19994508), (2, 9997254), (3, 6664836), (4, 4998627), (6, 3332418), (9, 2221612), (12, 1666209), (18, 1110806), (36, 555403), (397, 50364), (794, 25182), (1191, 16788), (1399, 14292), (1588, 12591), (2382, 8394), (2798, 7146), (3573, 5596), (4197, 4764)]