16420420

素因数分解:

$2^2\times 5^1\times {\mathrm{251}}^1\times {\mathrm{3271}}^1$

素因数の和:3531

約数の個数: 24

約数和(自身を含む): 34630848

約数和(自身を除く): 18210428

約数列:

[1, 2, 4, 5, 10, 20, 251, 502, 1004, 1255, 2510, 3271, 5020, 6542, 13084, 16355, 32710, 65420, 821021, 1642042, 3284084, 4105105, 8210210, 16420420]

約数ペア:

[(1, 16420420), (2, 8210210), (4, 4105105), (5, 3284084), (10, 1642042), (20, 821021), (251, 65420), (502, 32710), (1004, 16355), (1255, 13084), (2510, 6542), (3271, 5020)]