81427520

素因数分解:

$2^6\times 5^1\times {\mathrm{254461}}^1$

素因数の和:254478

約数の個数: 28

約数和(自身を含む): 193900044

約数和(自身を除く): 112472524

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 254461, 508922, 1017844, 1272305, 2035688, 2544610, 4071376, 5089220, 8142752, 10178440, 16285504, 20356880, 40713760, 81427520]

約数ペア:

[(1, 81427520), (2, 40713760), (4, 20356880), (5, 16285504), (8, 10178440), (10, 8142752), (16, 5089220), (20, 4071376), (32, 2544610), (40, 2035688), (64, 1272305), (80, 1017844), (160, 508922), (320, 254461)]