196989779

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{1361}}^1$

素因数の和:1451

約数の個数: 32

約数和(自身を含む): 251043840

約数和(自身を除く): 54054061

約数列:

[1, 7, 23, 29, 31, 161, 203, 217, 667, 713, 899, 1361, 4669, 4991, 6293, 9527, 20677, 31303, 39469, 42191, 144739, 219121, 276283, 295337, 907787, 970393, 1223539, 6354509, 6792751, 8564773, 28141397, 196989779]

約数ペア:

[(1, 196989779), (7, 28141397), (23, 8564773), (29, 6792751), (31, 6354509), (161, 1223539), (203, 970393), (217, 907787), (667, 295337), (713, 276283), (899, 219121), (1361, 144739), (4669, 42191), (4991, 39469), (6293, 31303), (9527, 20677)]