820121278

素因数分解:

$2^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{126601}}^1$

素因数の和:126723

約数の個数: 16

約数和(自身を含む): 1276148160

約数和(自身を除く): 456026882

約数列:

[1, 2, 41, 79, 82, 158, 3239, 6478, 126601, 253202, 5190641, 10001479, 10381282, 20002958, 410060639, 820121278]

約数ペア:

[(1, 820121278), (2, 410060639), (41, 20002958), (79, 10381282), (82, 10001479), (158, 5190641), (3239, 253202), (6478, 126601)]