28310540

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{19937}}^1$

素因数の和:20017

約数の個数: 24

約数和(自身を含む): 60292512

約数和(自身を除く): 31981972

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 19937, 39874, 79748, 99685, 199370, 398740, 1415527, 2831054, 5662108, 7077635, 14155270, 28310540]

約数ペア:

[(1, 28310540), (2, 14155270), (4, 7077635), (5, 5662108), (10, 2831054), (20, 1415527), (71, 398740), (142, 199370), (284, 99685), (355, 79748), (710, 39874), (1420, 19937)]