1291105

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{109}}^1$

素因数の和:240

約数の個数: 16

約数和(自身を含む): 1647360

約数和(自身を除く): 356255

約数列:

[1, 5, 23, 103, 109, 115, 515, 545, 2369, 2507, 11227, 11845, 12535, 56135, 258221, 1291105]

約数ペア:

[(1, 1291105), (5, 258221), (23, 56135), (103, 12535), (109, 11845), (115, 11227), (515, 2507), (545, 2369)]