289157090

素因数分解:

$2^1\times 5^1\times {\mathrm{401}}^1\times {\mathrm{72109}}^1$

素因数の和:72517

約数の個数: 16

約数和(自身を含む): 521787960

約数和(自身を除く): 232630870

約数列:

[1, 2, 5, 10, 401, 802, 2005, 4010, 72109, 144218, 360545, 721090, 28915709, 57831418, 144578545, 289157090]

約数ペア:

[(1, 289157090), (2, 144578545), (5, 57831418), (10, 28915709), (401, 721090), (802, 360545), (2005, 144218), (4010, 72109)]