19994384

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{739}}^1$

素因数の和:855

約数の個数: 40

約数和(自身を含む): 41292000

約数和(自身を除く): 21297616

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 89, 152, 178, 304, 356, 712, 739, 1424, 1478, 1691, 2956, 3382, 5912, 6764, 11824, 13528, 14041, 27056, 28082, 56164, 65771, 112328, 131542, 224656, 263084, 526168, 1052336, 1249649, 2499298, 4998596, 9997192, 19994384]

約数ペア:

[(1, 19994384), (2, 9997192), (4, 4998596), (8, 2499298), (16, 1249649), (19, 1052336), (38, 526168), (76, 263084), (89, 224656), (152, 131542), (178, 112328), (304, 65771), (356, 56164), (712, 28082), (739, 27056), (1424, 14041), (1478, 13528), (1691, 11824), (2956, 6764), (3382, 5912)]