18991533

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{349}}^1$

素因数の和:477

約数の個数: 32

約数和(自身を含む): 29635200

約数和(自身を除く): 10643667

約数列:

[1, 3, 11, 17, 33, 51, 97, 187, 291, 349, 561, 1047, 1067, 1649, 3201, 3839, 4947, 5933, 11517, 17799, 18139, 33853, 54417, 65263, 101559, 195789, 372383, 575501, 1117149, 1726503, 6330511, 18991533]

約数ペア:

[(1, 18991533), (3, 6330511), (11, 1726503), (17, 1117149), (33, 575501), (51, 372383), (97, 195789), (187, 101559), (291, 65263), (349, 54417), (561, 33853), (1047, 18139), (1067, 17799), (1649, 11517), (3201, 5933), (3839, 4947)]