28988990

素因数分解:

$2^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{22129}}^1$

素因数の和:22267

約数の個数: 16

約数和(自身を含む): 52580880

約数和(自身を除く): 23591890

約数列:

[1, 2, 5, 10, 131, 262, 655, 1310, 22129, 44258, 110645, 221290, 2898899, 5797798, 14494495, 28988990]

約数ペア:

[(1, 28988990), (2, 14494495), (5, 5797798), (10, 2898899), (131, 221290), (262, 110645), (655, 44258), (1310, 22129)]