21349672

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{1171}}^1$

素因数の和:1273

約数の個数: 32

約数和(自身を含む): 41770080

約数和(自身を除く): 20420408

約数列:

[1, 2, 4, 8, 43, 53, 86, 106, 172, 212, 344, 424, 1171, 2279, 2342, 4558, 4684, 9116, 9368, 18232, 50353, 62063, 100706, 124126, 201412, 248252, 402824, 496504, 2668709, 5337418, 10674836, 21349672]

約数ペア:

[(1, 21349672), (2, 10674836), (4, 5337418), (8, 2668709), (43, 496504), (53, 402824), (86, 248252), (106, 201412), (172, 124126), (212, 100706), (344, 62063), (424, 50353), (1171, 18232), (2279, 9368), (2342, 9116), (4558, 4684)]