21710840

素因数分解:

$2^3\times 5^1\times {\mathrm{542771}}^1$

素因数の和:542782

約数の個数: 16

約数和(自身を含む): 48849480

約数和(自身を除く): 27138640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 542771, 1085542, 2171084, 2713855, 4342168, 5427710, 10855420, 21710840]

約数ペア:

[(1, 21710840), (2, 10855420), (4, 5427710), (5, 4342168), (8, 2713855), (10, 2171084), (20, 1085542), (40, 542771)]