21422480

素因数分解:

$2^4\times 5^1\times {\mathrm{267781}}^1$

素因数の和:267794

約数の個数: 20

約数和(自身を含む): 49807452

約数和(自身を除く): 28384972

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 267781, 535562, 1071124, 1338905, 2142248, 2677810, 4284496, 5355620, 10711240, 21422480]

約数ペア:

[(1, 21422480), (2, 10711240), (4, 5355620), (5, 4284496), (8, 2677810), (10, 2142248), (16, 1338905), (20, 1071124), (40, 535562), (80, 267781)]