21025495

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{5147}}^1$

素因数の和:5214

約数の個数: 16

約数和(自身を含む): 27181440

約数和(自身を除く): 6155945

約数列:

[1, 5, 19, 43, 95, 215, 817, 4085, 5147, 25735, 97793, 221321, 488965, 1106605, 4205099, 21025495]

約数ペア:

[(1, 21025495), (5, 4205099), (19, 1106605), (43, 488965), (95, 221321), (215, 97793), (817, 25735), (4085, 5147)]