28250840

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{6857}}^1$

素因数の和:6971

約数の個数: 32

約数和(自身を含む): 64190880

約数和(自身を除く): 35940040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 6857, 13714, 27428, 34285, 54856, 68570, 137140, 274280, 706271, 1412542, 2825084, 3531355, 5650168, 7062710, 14125420, 28250840]

約数ペア:

[(1, 28250840), (2, 14125420), (4, 7062710), (5, 5650168), (8, 3531355), (10, 2825084), (20, 1412542), (40, 706271), (103, 274280), (206, 137140), (412, 68570), (515, 54856), (824, 34285), (1030, 27428), (2060, 13714), (4120, 6857)]