21761240

素因数分解:

$2^3\times 5^1\times {\mathrm{544031}}^1$

素因数の和:544042

約数の個数: 16

約数和(自身を含む): 48962880

約数和(自身を除く): 27201640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 544031, 1088062, 2176124, 2720155, 4352248, 5440310, 10880620, 21761240]

約数ペア:

[(1, 21761240), (2, 10880620), (4, 5440310), (5, 4352248), (8, 2720155), (10, 2176124), (20, 1088062), (40, 544031)]