209969420

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{80141}}^1$

素因数の和:80281

約数の個数: 24

約数和(自身を含む): 444307248

約数和(自身を除く): 234337828

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 80141, 160282, 320564, 400705, 801410, 1602820, 10498471, 20996942, 41993884, 52492355, 104984710, 209969420]

約数ペア:

[(1, 209969420), (2, 104984710), (4, 52492355), (5, 41993884), (10, 20996942), (20, 10498471), (131, 1602820), (262, 801410), (524, 400705), (655, 320564), (1310, 160282), (2620, 80141)]