20430640

素因数分解:

$2^4\times 5^1\times {\mathrm{255383}}^1$

素因数の和:255396

約数の個数: 20

約数和(自身を含む): 47501424

約数和(自身を除く): 27070784

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 255383, 510766, 1021532, 1276915, 2043064, 2553830, 4086128, 5107660, 10215320, 20430640]

約数ペア:

[(1, 20430640), (2, 10215320), (4, 5107660), (5, 4086128), (8, 2553830), (10, 2043064), (16, 1276915), (20, 1021532), (40, 510766), (80, 255383)]