54405980

素因数分解:

$2^2\times 5^1\times {\mathrm{2720299}}^1$

素因数の和:2720308

約数の個数: 12

約数和(自身を含む): 114252600

約数和(自身を除く): 59846620

約数列:

[1, 2, 4, 5, 10, 20, 2720299, 5440598, 10881196, 13601495, 27202990, 54405980]

約数ペア:

[(1, 54405980), (2, 27202990), (4, 13601495), (5, 10881196), (10, 5440598), (20, 2720299)]