18278998

素因数分解:

$2^1\times {\mathrm{89}}^1\times {\mathrm{103}}^1\times {\mathrm{997}}^1$

素因数の和:1191

約数の個数: 16

約数和(自身を含む): 28023840

約数和(自身を除く): 9744842

約数列:

[1, 2, 89, 103, 178, 206, 997, 1994, 9167, 18334, 88733, 102691, 177466, 205382, 9139499, 18278998]

約数ペア:

[(1, 18278998), (2, 9139499), (89, 205382), (103, 177466), (178, 102691), (206, 88733), (997, 18334), (1994, 9167)]