21961550121

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{55041479}}^1$

素因数の和:55041508

約数の個数: 16

約数和(自身を含む): 35226547200

約数和(自身を除く): 13264997079

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 55041479, 165124437, 385290353, 1045788101, 1155871059, 3137364303, 7320516707, 21961550121]

約数ペア:

[(1, 21961550121), (3, 7320516707), (7, 3137364303), (19, 1155871059), (21, 1045788101), (57, 385290353), (133, 165124437), (399, 55041479)]