172389721

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{487}}^1\times {\mathrm{829}}^1$

素因数の和:1384

約数の個数: 16

約数和(自身を含む): 200899840

約数和(自身を除く): 28510119

約数列:

[1, 7, 61, 427, 487, 829, 3409, 5803, 29707, 50569, 207949, 353983, 403723, 2826061, 24627103, 172389721]

約数ペア:

[(1, 172389721), (7, 24627103), (61, 2826061), (427, 403723), (487, 353983), (829, 207949), (3409, 50569), (5803, 29707)]