16731980

素因数分解:

$2^2\times 5^1\times {\mathrm{821}}^1\times {\mathrm{1019}}^1$

素因数の和:1849

約数の個数: 24

約数和(自身を含む): 35214480

約数和(自身を除く): 18482500

約数列:

[1, 2, 4, 5, 10, 20, 821, 1019, 1642, 2038, 3284, 4076, 4105, 5095, 8210, 10190, 16420, 20380, 836599, 1673198, 3346396, 4182995, 8365990, 16731980]

約数ペア:

[(1, 16731980), (2, 8365990), (4, 4182995), (5, 3346396), (10, 1673198), (20, 836599), (821, 20380), (1019, 16420), (1642, 10190), (2038, 8210), (3284, 5095), (4076, 4105)]