21243368

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{139759}}^1$

素因数の和:139784

約数の個数: 16

約数和(自身を含む): 41928000

約数和(自身を除く): 20684632

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 139759, 279518, 559036, 1118072, 2655421, 5310842, 10621684, 21243368]

約数ペア:

[(1, 21243368), (2, 10621684), (4, 5310842), (8, 2655421), (19, 1118072), (38, 559036), (76, 279518), (152, 139759)]