21507629

素因数分解:

${\mathrm{11}}^4\times {\mathrm{13}}^1\times {\mathrm{113}}^1$

素因数の和:170

約数の個数: 20

約数和(自身を含む): 25703580

約数和(自身を除く): 4195951

約数列:

[1, 11, 13, 113, 121, 143, 1243, 1331, 1469, 1573, 13673, 14641, 16159, 17303, 150403, 177749, 190333, 1654433, 1955239, 21507629]

約数ペア:

[(1, 21507629), (11, 1955239), (13, 1654433), (113, 190333), (121, 177749), (143, 150403), (1243, 17303), (1331, 16159), (1469, 14641), (1573, 13673)]