18926831

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{761}}^1$

素因数の和:815

約数の個数: 32

約数和(自身を含む): 26334720

約数和(自身を除く): 7407889

約数列:

[1, 7, 11, 17, 19, 77, 119, 133, 187, 209, 323, 761, 1309, 1463, 2261, 3553, 5327, 8371, 12937, 14459, 24871, 58597, 90559, 101213, 142307, 159049, 245803, 996149, 1113343, 1720621, 2703833, 18926831]

約数ペア:

[(1, 18926831), (7, 2703833), (11, 1720621), (17, 1113343), (19, 996149), (77, 245803), (119, 159049), (133, 142307), (187, 101213), (209, 90559), (323, 58597), (761, 24871), (1309, 14459), (1463, 12937), (2261, 8371), (3553, 5327)]