209542526

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{128239}}^1$

素因数の和:128303

約数の個数: 16

約数和(自身を含む): 338553600

約数和(自身を除く): 129011074

約数列:

[1, 2, 19, 38, 43, 86, 817, 1634, 128239, 256478, 2436541, 4873082, 5514277, 11028554, 104771263, 209542526]

約数ペア:

[(1, 209542526), (2, 104771263), (19, 11028554), (38, 5514277), (43, 4873082), (86, 2436541), (817, 256478), (1634, 128239)]