28315820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{108907}}^1$

素因数の和:108929

約数の個数: 24

約数和(自身を含む): 64037904

約数和(自身を除く): 35722084

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 108907, 217814, 435628, 544535, 1089070, 1415791, 2178140, 2831582, 5663164, 7078955, 14157910, 28315820]

約数ペア:

[(1, 28315820), (2, 14157910), (4, 7078955), (5, 5663164), (10, 2831582), (13, 2178140), (20, 1415791), (26, 1089070), (52, 544535), (65, 435628), (130, 217814), (260, 108907)]