21252488

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{1571}}^1$

素因数の和:1685

約数の個数: 32

約数和(自身を含む): 42444000

約数和(自身を除く): 21191512

約数列:

[1, 2, 4, 8, 19, 38, 76, 89, 152, 178, 356, 712, 1571, 1691, 3142, 3382, 6284, 6764, 12568, 13528, 29849, 59698, 119396, 139819, 238792, 279638, 559276, 1118552, 2656561, 5313122, 10626244, 21252488]

約数ペア:

[(1, 21252488), (2, 10626244), (4, 5313122), (8, 2656561), (19, 1118552), (38, 559276), (76, 279638), (89, 238792), (152, 139819), (178, 119396), (356, 59698), (712, 29849), (1571, 13528), (1691, 12568), (3142, 6764), (3382, 6284)]