21130984

素因数分解:

$2^3\times 7^1\times {\mathrm{377339}}^1$

素因数の和:377352

約数の個数: 16

約数和(自身を含む): 45280800

約数和(自身を除く): 24149816

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 377339, 754678, 1509356, 2641373, 3018712, 5282746, 10565492, 21130984]

約数ペア:

[(1, 21130984), (2, 10565492), (4, 5282746), (7, 3018712), (8, 2641373), (14, 1509356), (28, 754678), (56, 377339)]