28391920

素因数分解:

$2^4\times 5^1\times {\mathrm{67}}^1\times {\mathrm{5297}}^1$

素因数の和:5377

約数の個数: 40

約数和(自身を含む): 67009104

約数和(自身を除く): 38617184

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 67, 80, 134, 268, 335, 536, 670, 1072, 1340, 2680, 5297, 5360, 10594, 21188, 26485, 42376, 52970, 84752, 105940, 211880, 354899, 423760, 709798, 1419596, 1774495, 2839192, 3548990, 5678384, 7097980, 14195960, 28391920]

約数ペア:

[(1, 28391920), (2, 14195960), (4, 7097980), (5, 5678384), (8, 3548990), (10, 2839192), (16, 1774495), (20, 1419596), (40, 709798), (67, 423760), (80, 354899), (134, 211880), (268, 105940), (335, 84752), (536, 52970), (670, 42376), (1072, 26485), (1340, 21188), (2680, 10594), (5297, 5360)]