20181591

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{1103}}^1$

素因数の和:1235

約数の個数: 24

約数和(自身を含む): 31000320

約数和(自身を除く): 10818729

約数列:

[1, 3, 9, 19, 57, 107, 171, 321, 963, 1103, 2033, 3309, 6099, 9927, 18297, 20957, 62871, 118021, 188613, 354063, 1062189, 2242399, 6727197, 20181591]

約数ペア:

[(1, 20181591), (3, 6727197), (9, 2242399), (19, 1062189), (57, 354063), (107, 188613), (171, 118021), (321, 62871), (963, 20957), (1103, 18297), (2033, 9927), (3309, 6099)]