20806828

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{23971}}^1$

素因数の和:24013

約数の個数: 24

約数和(自身を含む): 42957824

約数和(自身を除く): 22150996

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 124, 217, 434, 868, 23971, 47942, 95884, 167797, 335594, 671188, 743101, 1486202, 2972404, 5201707, 10403414, 20806828]

約数ペア:

[(1, 20806828), (2, 10403414), (4, 5201707), (7, 2972404), (14, 1486202), (28, 743101), (31, 671188), (62, 335594), (124, 167797), (217, 95884), (434, 47942), (868, 23971)]