12687820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{173}}^1\times {\mathrm{193}}^1$

素因数の和:394

約数の個数: 48

約数和(自身を含む): 28355040

約数和(自身を除く): 15667220

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 173, 190, 193, 346, 380, 386, 692, 772, 865, 965, 1730, 1930, 3287, 3460, 3667, 3860, 6574, 7334, 13148, 14668, 16435, 18335, 32870, 33389, 36670, 65740, 66778, 73340, 133556, 166945, 333890, 634391, 667780, 1268782, 2537564, 3171955, 6343910, 12687820]

約数ペア:

[(1, 12687820), (2, 6343910), (4, 3171955), (5, 2537564), (10, 1268782), (19, 667780), (20, 634391), (38, 333890), (76, 166945), (95, 133556), (173, 73340), (190, 66778), (193, 65740), (346, 36670), (380, 33389), (386, 32870), (692, 18335), (772, 16435), (865, 14668), (965, 13148), (1730, 7334), (1930, 6574), (3287, 3860), (3460, 3667)]