81507374

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{193}}^1\times {\mathrm{439}}^1$

素因数の和:684

約数の個数: 32

約数和(自身を含む): 136234560

約数和(自身を除く): 54727186

約数列:

[1, 2, 13, 26, 37, 74, 193, 386, 439, 481, 878, 962, 2509, 5018, 5707, 7141, 11414, 14282, 16243, 32486, 84727, 92833, 169454, 185666, 211159, 422318, 1101451, 2202902, 3134899, 6269798, 40753687, 81507374]

約数ペア:

[(1, 81507374), (2, 40753687), (13, 6269798), (26, 3134899), (37, 2202902), (74, 1101451), (193, 422318), (386, 211159), (439, 185666), (481, 169454), (878, 92833), (962, 84727), (2509, 32486), (5018, 16243), (5707, 14282), (7141, 11414)]