179990

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{439}}^1$

素因数の和:487

約数の個数: 16

約数和(自身を含む): 332640

約数和(自身を除く): 152650

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 439, 878, 2195, 4390, 17999, 35998, 89995, 179990]

約数ペア:

[(1, 179990), (2, 89995), (5, 35998), (10, 17999), (41, 4390), (82, 2195), (205, 878), (410, 439)]