81139960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{184409}}^1$

素因数の和:184431

約数の個数: 32

約数和(自身を含む): 199162800

約数和(自身を除く): 118022840

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 184409, 368818, 737636, 922045, 1475272, 1844090, 2028499, 3688180, 4056998, 7376360, 8113996, 10142495, 16227992, 20284990, 40569980, 81139960]

約数ペア:

[(1, 81139960), (2, 40569980), (4, 20284990), (5, 16227992), (8, 10142495), (10, 8113996), (11, 7376360), (20, 4056998), (22, 3688180), (40, 2028499), (44, 1844090), (55, 1475272), (88, 922045), (110, 737636), (220, 368818), (440, 184409)]