21760240

素因数分解:

$2^4\times 5^1\times {\mathrm{272003}}^1$

素因数の和:272016

約数の個数: 20

約数和(自身を含む): 50592744

約数和(自身を除く): 28832504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 272003, 544006, 1088012, 1360015, 2176024, 2720030, 4352048, 5440060, 10880120, 21760240]

約数ペア:

[(1, 21760240), (2, 10880120), (4, 5440060), (5, 4352048), (8, 2720030), (10, 2176024), (16, 1360015), (20, 1088012), (40, 544006), (80, 272003)]