21711640

素因数分解:

$2^3\times 5^1\times {\mathrm{542791}}^1$

素因数の和:542802

約数の個数: 16

約数和(自身を含む): 48851280

約数和(自身を除く): 27139640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 542791, 1085582, 2171164, 2713955, 4342328, 5427910, 10855820, 21711640]

約数ペア:

[(1, 21711640), (2, 10855820), (4, 5427910), (5, 4342328), (8, 2713955), (10, 2171164), (20, 1085582), (40, 542791)]