81155740

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{48889}}^1$

素因数の和:48981

約数の個数: 24

約数和(自身を含む): 172483920

約数和(自身を除く): 91328180

約数列:

[1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830, 1660, 48889, 97778, 195556, 244445, 488890, 977780, 4057787, 8115574, 16231148, 20288935, 40577870, 81155740]

約数ペア:

[(1, 81155740), (2, 40577870), (4, 20288935), (5, 16231148), (10, 8115574), (20, 4057787), (83, 977780), (166, 488890), (332, 244445), (415, 195556), (830, 97778), (1660, 48889)]