21552680

素因数分解:

$2^3\times 5^1\times {\mathrm{538817}}^1$

素因数の和:538828

約数の個数: 16

約数和(自身を含む): 48493620

約数和(自身を除く): 26940940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 538817, 1077634, 2155268, 2694085, 4310536, 5388170, 10776340, 21552680]

約数ペア:

[(1, 21552680), (2, 10776340), (4, 5388170), (5, 4310536), (8, 2694085), (10, 2155268), (20, 1077634), (40, 538817)]