18907438

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{193}}^1$

素因数の和:340

約数の個数: 32

約数和(自身を含む): 32042592

約数和(自身を除く): 13135154

約数列:

[1, 2, 11, 22, 61, 73, 122, 146, 193, 386, 671, 803, 1342, 1606, 2123, 4246, 4453, 8906, 11773, 14089, 23546, 28178, 48983, 97966, 129503, 154979, 259006, 309958, 859429, 1718858, 9453719, 18907438]

約数ペア:

[(1, 18907438), (2, 9453719), (11, 1718858), (22, 859429), (61, 309958), (73, 259006), (122, 154979), (146, 129503), (193, 97966), (386, 48983), (671, 28178), (803, 23546), (1342, 14089), (1606, 11773), (2123, 8906), (4246, 4453)]