21447751

素因数分解:

${\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{1223}}^1$

素因数の和:1326

約数の個数: 16

約数和(自身を含む): 24675840

約数和(自身を除く): 3228089

約数列:

[1, 13, 19, 71, 247, 923, 1223, 1349, 15899, 17537, 23237, 86833, 302081, 1128829, 1649827, 21447751]

約数ペア:

[(1, 21447751), (13, 1649827), (19, 1128829), (71, 302081), (247, 86833), (923, 23237), (1223, 17537), (1349, 15899)]