12871220

素因数分解:

$2^2\times 5^1\times {\mathrm{263}}^1\times {\mathrm{2447}}^1$

素因数の和:2719

約数の個数: 24

約数和(自身を含む): 27143424

約数和(自身を除く): 14272204

約数列:

[1, 2, 4, 5, 10, 20, 263, 526, 1052, 1315, 2447, 2630, 4894, 5260, 9788, 12235, 24470, 48940, 643561, 1287122, 2574244, 3217805, 6435610, 12871220]

約数ペア:

[(1, 12871220), (2, 6435610), (4, 3217805), (5, 2574244), (10, 1287122), (20, 643561), (263, 48940), (526, 24470), (1052, 12235), (1315, 9788), (2447, 5260), (2630, 4894)]